Search is not available for this dataset
url string | text string | date timestamp[s] | meta dict |
|---|---|---|---|
http://mathhelpforum.com/algebra/98142-i-m-stuck-losing-sleep.html | # Math Help - I'm stuck and losing sleep!
1. ## I'm stuck and losing sleep!
Help if anyone can provide it! I'm stuck on a problem that I have the answer but don't know how they got it. Here it is:
A wire is cut into three equal parts. The resulting segments are then cut into 4, 6, and 8 parts respectively. If each o... | 2015-05-23T15:58:03 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/algebra/98142-i-m-stuck-losing-sleep.html",
"openwebmath_score": 0.6497178673744202,
"openwebmath_perplexity": 302.59698022445804,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639694252315,
"lm_q2_sco... |
http://mathhelpforum.com/calculus/97279-more-volume-resulting-solid.html | # Thread: more volume of resulting solid
1. ## more volume of resulting solid
The region between the graphs of y=x2 and y=2x is rotated around the line x=2.
The volume of the resulting solid is
ok i need some more help with this one
|2
| pi[(2-x^2)^2-(2-2x)^2]
|0
im not sure what im doing wrong here
2. Originally... | 2016-10-21T12:06:29 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/calculus/97279-more-volume-resulting-solid.html",
"openwebmath_score": 0.5817983150482178,
"openwebmath_perplexity": 1813.7454180418435,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639694252315,
"lm_... |
http://openstudy.com/updates/560c137fe4b0659107565c62 | ## nthenic_oftime one year ago please help.. idk how to even figure this out so steps would be nice too. Find the specified vector or scalar. u = -4i + 1j and v = 4i + 1j; Find . ||u+v|| A. Sqrt34 B. 8 C. 5 D. 2
1. phi
first add the "corresponding" terms then find the length of the resulting vector (length is sqrt(su... | 2017-01-17T17:42:55 | {
"domain": "openstudy.com",
"url": "http://openstudy.com/updates/560c137fe4b0659107565c62",
"openwebmath_score": 0.8404390811920166,
"openwebmath_perplexity": 1755.924296382822,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018702,
"lm_q2_score": 0.672331699179286... |
http://math.stackexchange.com/questions/133041/how-can-i-solve-xx-5-for-x | # How can I solve $x^x = 5$ for $x$? [duplicate]
Possible Duplicate:
Is $x^x=y$ solvable for $x$?
I've been playing with this equation for a while now and can't figure out how to isolate $x$.
I've gotten to $x \ln x = \ln 5$, which seems like it would be easier to work with, but I can't figure out where to go from t... | 2015-09-02T05:28:43 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/133041/how-can-i-solve-xx-5-for-x",
"openwebmath_score": 0.86131352186203,
"openwebmath_perplexity": 288.74865566355084,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018702,
"lm_q2_sc... |
http://mathhelpforum.com/advanced-statistics/59216-poisson-distribution-help-v2-0-a.html | ## Poisson Distribution Help v2.0
This problem is confusing me too.
In a length manuscript, it is discovered that only 13.5% of the pages contain no typing errors. If we assume that the number of errors per page is a random variable with a Poisson distribution, find the percentage of pages that have exactly one error... | 2016-08-28T21:03:12 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/advanced-statistics/59216-poisson-distribution-help-v2-0-a.html",
"openwebmath_score": 0.9681388735771179,
"openwebmath_perplexity": 348.3346576763156,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.971563968... |
https://www.ffi.no/en/research/n-vector/vector-symbols-explained | # Vector symbols explained
Here you will find the mathematical notation used for the n-vector page.
The notation system used for the n-vector page and in the files for download is presented in Chapter 2 of the following thesis: Gade (2018): Inertial Navigation - Theory and Applications. A simplified presentation is g... | 2023-01-28T14:21:00 | {
"domain": "ffi.no",
"url": "https://www.ffi.no/en/research/n-vector/vector-symbols-explained",
"openwebmath_score": 0.8428168296813965,
"openwebmath_perplexity": 736.4020758903888,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018702,
"lm_q2_score": 0.67233169917... |
https://dsp.stackexchange.com/questions/30701/inverse-laplace-transform-using-inversion-formula | # Inverse Laplace transform Using Inversion Formula
Use the complex inversion formula to calculate the inverse Laplace transform $f(t)$ of the following Laplace transform: $$F_L (s) = \frac{1}{(s+2)(s^2 +4)}.$$ When the region of convergence is: \begin{align}(1)& \quad Re(s)<-2;\\(2)&\quad -2<Re(s)<0;\\(3)&\quad Re(s)... | 2021-05-08T10:16:40 | {
"domain": "stackexchange.com",
"url": "https://dsp.stackexchange.com/questions/30701/inverse-laplace-transform-using-inversion-formula",
"openwebmath_score": 0.9766323566436768,
"openwebmath_perplexity": 262.25413467172365,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.97156... |
https://math.stackexchange.com/questions/2984134/can-someone-explain-how-this-is-not-self-adjoint | # Can someone explain how this is not self adjoint?
The matrix representation of a linear operator T: $$\mathbb{R}^{2}\rightarrow \mathbb{R}^{2}$$ is given with respect to the following basis $$\begin{bmatrix}-5 &2 & \\ 2&5 & \end{bmatrix}$$ is the matrix of T when written with respect to the basis $$(1,0)$$ and $$(1,... | 2019-12-08T00:38:45 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/2984134/can-someone-explain-how-this-is-not-self-adjoint",
"openwebmath_score": 0.9419352412223816,
"openwebmath_perplexity": 82.22937372979423,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715... |
https://kratos-wiki.cimne.upc.edu/index.php?title=Resolution_of_the_1D_Poisson%27s_equation_using_local_Shape_Functions&diff=prev&oldid=3725 | Resolution of the 1D Poisson's equation using local Shape Functions
(Difference between revisions)
Revision as of 10:21, 9 December 2008 (view source)JMora (Talk | contribs)← Older edit Latest revision as of 09:07, 4 November 2009 (view source)JMora (Talk | contribs) Line 363: Line 363: :Come back to the [[Poisson's_... | 2022-08-12T00:51:35 | {
"domain": "upc.edu",
"url": "https://kratos-wiki.cimne.upc.edu/index.php?title=Resolution_of_the_1D_Poisson%27s_equation_using_local_Shape_Functions&diff=prev&oldid=3725",
"openwebmath_score": 1.0000100135803223,
"openwebmath_perplexity": 5853.603797156058,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\... |
https://de.maplesoft.com/support/help/view.aspx?path=geometry/hyperbola&L=G | hyperbola - Maple Help
geometry
hyperbola
define a hyperbola
Calling Sequence hyperbola(p, [A, B, C, E, F], n) hyperbola(p, ['directrix'=dir, 'focus'=fou, 'eccentricity'=ecc], n) hyperbola(p, ['foci'=foi, 'vertices'=ver], n) hyperbola(p, ['foci'=foi, 'distancev'=disv], n) hyperbola(p, ['vertices'=ver, 'distancef... | 2022-08-19T14:47:09 | {
"domain": "maplesoft.com",
"url": "https://de.maplesoft.com/support/help/view.aspx?path=geometry/hyperbola&L=G",
"openwebmath_score": 0.7988901138305664,
"openwebmath_perplexity": 988.6805630706816,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018702,
"lm_q2_sco... |
https://www.clutchprep.com/physics/practice-problems/147234/suppose-a-1-6x105-kg-airplane-has-engines-that-produce-125-mw-of-power-part-a-ho | More Conservation of Energy Problems Video Lessons
Example
# Problem: Suppose a 1.6x105-kg airplane has engines that produce 125 MW of power.Part (a). How many seconds would it take the airplane to reach a speed of 265 m/s and an altitude of 13.5 km, if air resistance were negligible? Part (b). How much power did the... | 2021-01-25T21:31:03 | {
"domain": "clutchprep.com",
"url": "https://www.clutchprep.com/physics/practice-problems/147234/suppose-a-1-6x105-kg-airplane-has-engines-that-produce-125-mw-of-power-part-a-ho",
"openwebmath_score": 0.7919530868530273,
"openwebmath_perplexity": 744.395665445281,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1... |
https://stats.stackexchange.com/questions/308224/expectation-of-x-given-x-c?noredirect=1 | # Expectation of $X$ given $X < c$
Let $X$ be a random variable with PDF $f(\cdot)$ and CDF $\Phi(\cdot)$. I want to compute $E(X \mid X < c)$, where $c$ is some constant.
Using definition of the expected value
$$E(X \mid X < c) = \int_{-\infty}^{+\infty}xf(x\mid x<c)dx.$$
I know that conditional density should sim... | 2020-04-05T18:38:09 | {
"domain": "stackexchange.com",
"url": "https://stats.stackexchange.com/questions/308224/expectation-of-x-given-x-c?noredirect=1",
"openwebmath_score": 0.9020839929580688,
"openwebmath_perplexity": 150.8546479301871,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018... |
http://mathhelpforum.com/calculus/216668-help-lagrange-multipliers-print.html | # Help with Lagrange Multipliers
• Apr 4th 2013, 12:21 PM
Confucius
Help with Lagrange Multipliers
I am new to the forums, so please forgive any errors in formatting a request for help. Thanks to everyone who views this!
--------------------------------------------------------------------------------------------------... | 2016-09-25T16:50:57 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/calculus/216668-help-lagrange-multipliers-print.html",
"openwebmath_score": 0.9092636108398438,
"openwebmath_perplexity": 897.3627803256613,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018701,
"lm_... |
https://fr.maplesoft.com/support/help/maple/view.aspx?path=odeadvisor%2Fquadrature | Solving ODEs That Are in Quadrature Format - Maple Programming Help
Solving ODEs That Are in Quadrature Format
Description
• An ODE is said to be in quadrature format when the following conditions are met:
1) the ODE is of first order and the right hand sides below depend only on x or y(x):
${\mathrm{quadrature_1... | 2021-04-15T01:48:19 | {
"domain": "maplesoft.com",
"url": "https://fr.maplesoft.com/support/help/maple/view.aspx?path=odeadvisor%2Fquadrature",
"openwebmath_score": 0.9553918838500977,
"openwebmath_perplexity": 331.9397852848475,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018701,
"lm... |
https://mathlesstraveled.com/ | ## Book review: Opt Art
[Disclosure of Material Connection: Princeton Press kindly provided me with a free review copy of this book. I was not required to write a positive review. The opinions expressed are my own.]
Opt Art: From Mathematical Optimization to Visual Design
Robert Bosch
Princeton University Press, 2019... | 2019-12-08T15:09:14 | {
"domain": "mathlesstraveled.com",
"url": "https://mathlesstraveled.com/",
"openwebmath_score": 0.6345001459121704,
"openwebmath_perplexity": 362.3442499335215,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639677785088,
"lm_q2_score": 0.672331699179286,
"lm_q1q2_scor... |
https://puzzling.stackexchange.com/questions/2049/guess-the-function-for-scatterplot-of-number-theoretic-function/2050 | # Guess the Function for Scatterplot of Number Theoretic Function
To my knowledge, this puzzle is not previously published (except by me on google+ recently), but I would be interested to hear of any info otherwise.
This following graph was generated using a simple ruby program and gnuplot. It graphs a "basic/fundame... | 2019-10-23T08:48:52 | {
"domain": "stackexchange.com",
"url": "https://puzzling.stackexchange.com/questions/2049/guess-the-function-for-scatterplot-of-number-theoretic-function/2050",
"openwebmath_score": 0.4510771632194519,
"openwebmath_perplexity": 896.1373275971803,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
... |
https://mathoverflow.net/questions/229553/does-every-automorphism-of-a-separably-rationally-connected-variety-have-a-fixed | # Does every automorphism of a separably rationally connected variety have a fixed point?
Let $k$ be an algebraically closed field. Let $X$ be a smooth, projective variety over $k$ that is separably rationally connected, i.e., there exists a $k$-morphism $u:\mathbb{P}^1_k \to X$ such that $u^*T_X$ is isomorphic to $\m... | 2023-04-01T07:19:01 | {
"domain": "mathoverflow.net",
"url": "https://mathoverflow.net/questions/229553/does-every-automorphism-of-a-separably-rationally-connected-variety-have-a-fixed",
"openwebmath_score": 0.9210120439529419,
"openwebmath_perplexity": 109.32244560118517,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES"... |
https://www.bartleby.com/solution-answer/chapter-10-problem-1012ex-accounting-27th-edition/9781337272094/revision-of-depreciation-a-building-with-a-cost-of-1200000-has-an-estimated-residual-value-of/39289024-98dc-11e8-ada4-0ee91056875a | # Revision of depreciation A building with a cost of $1,200,000 has an estimated residual value of$250,000, has an estimated useful life of 40 years, and is depreciated by the straight-line method. (a) What is the amount of the annual depreciation? (b) What is the book value at the end of the twenty-eighth year of use?... | 2020-10-24T10:32:05 | {
"domain": "bartleby.com",
"url": "https://www.bartleby.com/solution-answer/chapter-10-problem-1012ex-accounting-27th-edition/9781337272094/revision-of-depreciation-a-building-with-a-cost-of-1200000-has-an-estimated-residual-value-of/39289024-98dc-11e8-ada4-0ee91056875a",
"openwebmath_score": 0.4483798146247864,... |
http://icpc.njust.edu.cn/Problem/CF/117A/ | # Elevator
Time Limit: 3 seconds
Memory Limit: 256 megabytes
## Description
And now the numerous qualifying tournaments for one of the most prestigious Russian contests Russian Codec Cup are over. All n participants who have made it to the finals found themselves in a huge m-floored 108-star hotel. Of course the fi... | 2020-10-29T22:37:27 | {
"domain": "edu.cn",
"url": "http://icpc.njust.edu.cn/Problem/CF/117A/",
"openwebmath_score": 0.3634292781352997,
"openwebmath_perplexity": 649.4073053572095,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639669551474,
"lm_q2_score": 0.672331699179286,
"lm_q1q2_score"... |
https://shopgdt.com/blog/archive.php?5b3d1c=projectile-motion-formula | In this part of the problem, explicitly show how you follow the steps involved in solving projectile motion problems. It can also work 'in reverse'. (c) What is the vertical component of the velocity just before the ball hits the ground? If the problem in question gives you a launch angle and an initial velocity, you’l... | 2021-01-27T13:01:48 | {
"domain": "shopgdt.com",
"url": "https://shopgdt.com/blog/archive.php?5b3d1c=projectile-motion-formula",
"openwebmath_score": 0.5525017976760864,
"openwebmath_perplexity": 562.3435474987284,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639669551474,
"lm_q2_score": 0.6... |
https://math.stackexchange.com/questions/1640803/how-to-count-the-closed-left-hand-turn-paths-of-planar-bicubic-graphs | # How to count the closed left-hand turn paths of planar bicubic graphs?
When you draw a planar cubic bipartite graph $\Gamma$ and 3-color its edges you can use this as an orientation $\mathcal O$.
Definition A left-hand turn path on $(\Gamma, \mathcal O)$ is a closed path on $\Gamma$ such that, at each vertex, the p... | 2019-08-22T20:28:06 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/1640803/how-to-count-the-closed-left-hand-turn-paths-of-planar-bicubic-graphs",
"openwebmath_score": 0.7901081442832947,
"openwebmath_perplexity": 258.646527947837,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"... |
http://mathhelpforum.com/calculus/77345-time-velocity-position-particle-print.html | # time, velocity, position of a particle
• March 7th 2009, 09:21 AM
LexiRae
time, velocity, position of a particle
at t time a particle is moving along the x axis at position x. the relationship between x and t is given by tx=x^2 +8. at x = 2 the velocity of the particle is:
• March 7th 2009, 09:38 AM
Mentia
Did you m... | 2014-12-25T22:11:14 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/calculus/77345-time-velocity-position-particle-print.html",
"openwebmath_score": 0.6628741025924683,
"openwebmath_perplexity": 1120.3789149781207,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.97156396695514... |
http://mathhelpforum.com/algebra/119194-factoring-polynomials.html | # Math Help - Factoring Polynomials
1. ## Factoring Polynomials
Hey there,
I'm new here, and am having some trouble with factoring. I have already done quadratic trinomials but am having a lot of trouble figuring out polynomials.
Here is one of the questions:
16x³ - 48x² - 9x + 27
Any help would be much appreciate... | 2016-02-11T06:41:21 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/algebra/119194-factoring-polynomials.html",
"openwebmath_score": 0.6560004949569702,
"openwebmath_perplexity": 950.3160014546132,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639669551474,
"lm_q2_scor... |
http://mathhelpforum.com/algebra/66889-sort-game-print.html | # Sort of a game
• Jan 4th 2009, 10:00 PM
Kai
Sort of a game
Someone asked me how to get 6 with 2 2 2 using any mathematical operations ( +,-,*,/, ^2, ^3..., sqaure root, cube root,...)
For 2 2 2, 2+2+2=6
For 3 3 3, 3*3 -3=6 ( or 3+3 * (3^0))
For 4 4 4, square root 4 + square root 4 + square root 4=6
For 5 5 5, 5+ (5... | 2017-07-29T12:17:10 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/algebra/66889-sort-game-print.html",
"openwebmath_score": 0.8708091378211975,
"openwebmath_perplexity": 3526.510884296058,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639669551472,
"lm_q2_score": 0.67233... |
https://openmath.org/cd/fns3.html | # OpenMath Content Dictionary: fns3
Canonical URL:
http://www.openmath.org/cd/fns3.ocd
CD Base:
http://www.openmath.org/cd
CD File:
fns3.ocd
CD as XML Encoded OpenMath:
fns3.omcd
Defines:
function, specification
Date:
2004-06-01
Version:
1 (Revision 1)
Review Date:
2006-06-01
Status:
experimental
This CD holds furthe... | 2021-09-28T03:48:29 | {
"domain": "openmath.org",
"url": "https://openmath.org/cd/fns3.html",
"openwebmath_score": 0.893739640712738,
"openwebmath_perplexity": 1985.289602777174,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639669551472,
"lm_q2_score": 0.672331699179286,
"lm_q1q2_score": 0... |
http://math.stackexchange.com/questions/97728/derivative-of-a-complicated-inverse-function | # Derivative of a complicated inverse function
$\Phi(\cdot,0,1)$ and $\phi(\cdot,0,1)$ are cdf and pdf of standard normal distribution. $$y=F_\text{mix}(x,\mu,\sigma)=\sum\limits_{i=1}^{K}\lambda_i\Phi\left(\frac{x-\mu_i}{\sigma_i},0,1\right).$$
$x=Q(y)$ is the inverse function of $F_\text{mix}$.
$$\mu_i=\bar{\mu_i}... | 2016-06-28T06:07:23 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/97728/derivative-of-a-complicated-inverse-function",
"openwebmath_score": 0.956185519695282,
"openwebmath_perplexity": 77.34233439850244,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563966543... |
http://math.stackexchange.com/questions/25054/expected-value-for-min-estimated-entropy | # expected value for min estimated entropy
We have a random generator that generates independent random bits with probability $P(x=1) = P$ and $P(x=0)=1-P$.
Given $N$ random independent bits, we estimate $P$ by $\hat{P} = N_1/(N_0+N_1)$. where $N_0$ is the number of $0$'s and $N_1$ is number of $1$'s. The expected va... | 2016-06-25T05:15:57 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/25054/expected-value-for-min-estimated-entropy",
"openwebmath_score": 0.9813743233680725,
"openwebmath_perplexity": 218.2853621081281,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563966131786... |
https://math.stackexchange.com/questions/967840/when-lim-n-rightarrow-infty-int-01fx-sinnx-0 | # When $\lim_{n\rightarrow\infty}\int_0^1f(x)\sin(nx)=0$
What is a good sufficient condition for $f:[0,1]\rightarrow\mathbb{R}$ such that:
$$\lim_{n\rightarrow\infty}\int_0^1f(x)\sin(nx)dx=0$$
If $f$ is differentiable then by integral by part we can easily prove. But I think differentiablity is a too strong conditio... | 2019-09-22T05:52:50 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/967840/when-lim-n-rightarrow-infty-int-01fx-sinnx-0",
"openwebmath_score": 0.9182623624801636,
"openwebmath_perplexity": 393.2027496310644,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563966... |
https://www.transtutors.com/questions/three-bonds-have-face-value-of-rs-1-000-coupon-rate-of-12-per-cent-and-maturity-of-5-820158.htm | # Three bonds have face value of Rs 1,000, coupon rate of 12 per cent and maturity of 5 years. 1 answer below »
Three bonds have face value of Rs 1,000, coupon rate of 12 per cent and maturity of 5 years. One pays interest annually, one pays interest half-yearly, and one pays interest quarterly. Calculate the prices o... | 2021-08-04T03:00:44 | {
"domain": "transtutors.com",
"url": "https://www.transtutors.com/questions/three-bonds-have-face-value-of-rs-1-000-coupon-rate-of-12-per-cent-and-maturity-of-5-820158.htm",
"openwebmath_score": 0.32755017280578613,
"openwebmath_perplexity": 5509.757733901341,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YE... |
https://socratic.org/questions/how-do-you-evaluate-10-4 | # How do you evaluate (10!)/(4!)?
May 7, 2017
(10!)/(4!) = 151,200
#### Explanation:
By hand you need to know that 10! = 10 * 9 * 8 * 7 * 6 * 5 * 4!
So 10! = (10 * 9 * 8 * 7 * 6 * 5 * cancel(4!))/(cancel(4!)) = 10 * 9 * 8 * 7 * 6 * 5 = 151,200
A TI graphing calculator can do factorials:
$10 \text{ MATH > PRB " 4... | 2022-08-14T12:23:02 | {
"domain": "socratic.org",
"url": "https://socratic.org/questions/how-do-you-evaluate-10-4",
"openwebmath_score": 0.5084953904151917,
"openwebmath_perplexity": 326.4927813826981,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.67233169917928... |
https://math.stackexchange.com/questions/3133473/partial-derivative-of-multi-variable-function | # partial derivative of multi-variable function
This is my original post.
In the derivation, I come across to the point that I need to decompose $$\frac{\partial f}{\partial v_x}$$ to obtain $$\frac{\partial f}{\partial v}$$, $$\frac{\partial f}{\partial \theta}$$,$$\frac{\partial f}{\partial \phi}$$ terms.
One SE u... | 2019-12-10T13:36:06 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/3133473/partial-derivative-of-multi-variable-function",
"openwebmath_score": 0.8957258462905884,
"openwebmath_perplexity": 354.7922862843991,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639... |
http://am207.info/wiki/dataaug.html | ## Contents
The idea is to construct iterative algorithms for sampling based on the introduction of unobserved data or hidden variables. Does the iterative part sound familiar? We did that in Gibbs sampling.
We’ll soon see s deterministic version of this idea when we talk about the Expectation Maximization Algorithm ... | 2019-01-17T23:28:07 | {
"domain": "am207.info",
"url": "http://am207.info/wiki/dataaug.html",
"openwebmath_score": 0.8455761671066284,
"openwebmath_perplexity": 384.60065636701853,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.672331699179286,
"lm_q1q2_score":... |
https://socratic.org/questions/55e9c56511ef6b433254aa5a | # Question 4aa5a
Sep 4, 2015
48 km/hr
#### Explanation:
Pick some distance the motorcyclist might have traveled (it doesn't matter what distance but for ease of calculation I chose 120 km).
Time spent traveling 120 km at 40 km/hr
color(white)("XXXX")120" km" div 40 " km/hr" = 3 " hours"
Time spent traveling 120 k... | 2019-10-18T16:14:04 | {
"domain": "socratic.org",
"url": "https://socratic.org/questions/55e9c56511ef6b433254aa5a",
"openwebmath_score": 0.8841671347618103,
"openwebmath_perplexity": 1138.9750089758434,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.6723316991792... |
https://socratic.org/questions/569d2cd611ef6b5b63a0cffc | # Question 0cffc
Jan 19, 2016
${\text{76 cm}}^{3}$
#### Explanation:
The density of a substance tells you the mass of that substance per unit of volume.
$\textcolor{b l u e}{\text{density" = "mass"/"unit of volume}}$
Simply put, you can look at a substance's density and tell what mass is associated with one unit ... | 2019-11-15T17:24:28 | {
"domain": "socratic.org",
"url": "https://socratic.org/questions/569d2cd611ef6b5b63a0cffc",
"openwebmath_score": 0.7487611174583435,
"openwebmath_perplexity": 404.6115029597012,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.67233169917928... |
http://mathhelpforum.com/calculus/36651-integration-math-solution.html | Math Help - Integration math solution
1. Integration math solution
Find the first-quadrant area bounded by the axes and the functions
f(x) = 0.5x + 2; g(x) = 2x - 4
2. Hello, urmiprincess!
Did you make a sketch?
Find the first-quadrant area bounded by the axes and the functions:
. . $\begin{array}{cccc}f(x) &= &... | 2015-04-27T00:27:55 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/calculus/36651-integration-math-solution.html",
"openwebmath_score": 0.7660218477249146,
"openwebmath_perplexity": 7653.506199495174,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_scor... |
https://stats.stackexchange.com/questions/152670/how-to-represent-distribution-dependencies-in-bayesian-graphical-models | # How to represent distribution dependencies in Bayesian graphical models?
In a Bayesian graphical model, suppose that we have a random variable $B$ whose parent is the random variable $A$. So there is an arrow from $A$ to $B$, and this means that the joint distribution is mechanistically factored as: $\Pr(A,B) = \Pr(... | 2022-01-20T09:40:16 | {
"domain": "stackexchange.com",
"url": "https://stats.stackexchange.com/questions/152670/how-to-represent-distribution-dependencies-in-bayesian-graphical-models",
"openwebmath_score": 0.8176276087760925,
"openwebmath_perplexity": 126.01286985063393,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",... |
http://lemon.cs.elte.hu/trac/lemon/browser/glpk-cmake/doc/glpk04.tex?rev=1 | # source:glpk-cmake/doc/glpk04.tex@1:c445c931472f
Last change on this file since 1:c445c931472f was 1:c445c931472f, checked in by Alpar Juttner <alpar@…>, 10 years ago
Import glpk-4.45
• Generated files and doc/notes are removed
File size: 53.9 KB
Line
1%* glpk04.tex *%
2
4
5\section{Background}
6\label{basbgd}
7
8U... | 2020-10-22T02:20:39 | {
"domain": "elte.hu",
"url": "http://lemon.cs.elte.hu/trac/lemon/browser/glpk-cmake/doc/glpk04.tex?rev=1",
"openwebmath_score": 0.9079437851905823,
"openwebmath_perplexity": 4250.01344872914,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639653084245,
"lm_q2_score": 0.6... |
https://prioritizr.net/reference/loglinear_interpolation.html | Log-linearly interpolate values between two thresholds.
loglinear_interpolation(
x,
coordinate_one_x,
coordinate_one_y,
coordinate_two_x,
coordinate_two_y
)
## Arguments
x numeric x values for which interpolate y values. numeric value for lower x-coordinate. numeric value for lower y-coordinate. numeric value for up... | 2021-06-19T12:41:44 | {
"domain": "prioritizr.net",
"url": "https://prioritizr.net/reference/loglinear_interpolation.html",
"openwebmath_score": 0.5760525465011597,
"openwebmath_perplexity": 7891.760500015894,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639653084245,
"lm_q2_score": 0.672331... |
https://math.stackexchange.com/questions/642226/understanding-the-syntax-for-derivatives-dy-dx | # Understanding the syntax for derivatives - dy/dx
I'm new to calculus, and I'm trying to understand the syntax of derivatives: $$\frac {dy}{dx}$$
At a glance it implies some kind of division and some variable "d" has entered the picture. Does this reflect some deep relationship between division and derivatives or is... | 2019-06-19T01:15:41 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/642226/understanding-the-syntax-for-derivatives-dy-dx",
"openwebmath_score": 0.9299219250679016,
"openwebmath_perplexity": 207.26456707666858,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563... |
http://math.stackexchange.com/questions/209637/derivative-of-a-vector-with-respect-to-a-matrix | Derivative of a vector with respect to a matrix
I am at an impasse. I don't know if homework is allowed on here or not, so if it isn't, someone delete this.
Given:
$H_{\gamma} = C_{\beta \beta} v_{\gamma} + C_{\beta \varepsilon} C_{\varepsilon \beta} v_{\gamma} + C_{\beta \varepsilon} v_{\varepsilon} C_{\beta \gamma... | 2014-07-28T05:01:48 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/209637/derivative-of-a-vector-with-respect-to-a-matrix",
"openwebmath_score": 0.9174253344535828,
"openwebmath_perplexity": 226.06546312155965,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563... |
http://math.stackexchange.com/questions/4009/confusion-between-operation-and-relation-clarification-needed | # Confusion between operation and relation: Clarification needed
I'm doing some old exams and found following question:
Set $S={{1,2,3}}$ is given. Provide an example of binary operation in set S, binary relation in set S and a function $f:S\rightarrow R$.
So, I'm thinking about $+_4$ as operation, but wouldn't it b... | 2014-12-28T04:30:38 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/4009/confusion-between-operation-and-relation-clarification-needed",
"openwebmath_score": 0.8076469302177429,
"openwebmath_perplexity": 153.96601447799634,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_scor... |
https://mathhelpforum.com/threads/exponents-and-logs.147017/ | # Exponents and Logs
#### nuckers
Why is the 5 in this equation, I can't multiply the 2 and 5, some of this math is so confusing
$$\displaystyle 2(5)^x=7^{x+1}$$
#### e^(i*pi)
MHF Hall of Honor
Why is the 5 in this equation, I can't multiply the 2 and 5, some of this math is so confusing
$$\displaystyle 2(5)^x=7^... | 2019-11-20T17:19:47 | {
"domain": "mathhelpforum.com",
"url": "https://mathhelpforum.com/threads/exponents-and-logs.147017/",
"openwebmath_score": 0.9540709853172302,
"openwebmath_perplexity": 296.02236098051196,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639653084245,
"lm_q2_score": 0.672... |
https://physics.stackexchange.com/questions/104826/conservation-of-energy-quick-question/104831 | # Conservation of energy quick question
Say we had a particle moving in a frictionless funnel and was projected horizontally.
If we had some initial conditions for the energy E, then would these conditions be the same always?
For instance, in this particular question I got $$E = 1/2m\dot r^2 - mgz,$$ and we were giv... | 2022-01-24T00:59:57 | {
"domain": "stackexchange.com",
"url": "https://physics.stackexchange.com/questions/104826/conservation-of-energy-quick-question/104831",
"openwebmath_score": 0.7783564329147339,
"openwebmath_perplexity": 208.1627005211177,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563... |
https://math.stackexchange.com/questions/648616/show-that-3-is-a-primitive-root-modulo-p-2q1 | # Show that $-3$ is a primitive root modulo $p=2q+1$
This was a question from an exam:
Let $q \ge 5$ be a prime number and assume that $p=2q+1$ is also prime. Prove that $-3$ is a primitive root in $\mathbb{Z}_p$.
I guess the solution goes something like this:
Let $k$ be the order multiplicative order of $-3$ modul... | 2019-07-23T09:58:34 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/648616/show-that-3-is-a-primitive-root-modulo-p-2q1",
"openwebmath_score": 0.9245212078094482,
"openwebmath_perplexity": 166.3319106188758,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563964... |
https://www.physicsforums.com/threads/closed-set-metric-spaces.548254/ | # Homework Help: Closed set (metric spaces)
1. Nov 7, 2011
### Ted123
Suppose $f:\mathbb{R}\to \mathbb{R}$ is a continuous function (standard metric).
Show that its graph $\{ (x,f(x)) : x \in \mathbb{R} \}$ is a closed subset of $\mathbb{R}^2$ (Euclidean metric).
How to show this is closed?
2. Nov 7, 2011
### la... | 2018-05-22T01:05:41 | {
"domain": "physicsforums.com",
"url": "https://www.physicsforums.com/threads/closed-set-metric-spaces.548254/",
"openwebmath_score": 0.7285190224647522,
"openwebmath_perplexity": 1026.882703922277,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639644850629,
"lm_q2_scor... |
http://mathhelpforum.com/pre-calculus/51437-pre-cal-help.html | # Thread: pre cal help
1. ## pre cal help
1. what is the area of a square whose diagnol is 1 unit longer than the length of a side?
2. if a 3 didget number is chosen at random, from the set of all 3 diget numbers what is the probablility all 3 didgets will be prime?
3. x+y=b
x+2y=b^2
for what value of "b" will the... | 2017-11-23T04:08:13 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/pre-calculus/51437-pre-cal-help.html",
"openwebmath_score": 0.6813880205154419,
"openwebmath_perplexity": 972.2709499650274,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.971563964485063,
"lm_q2_score": 0.... |
http://math.stackexchange.com/questions/256411/norm-of-a-linear-functional-f | # Norm of a linear functional f
Can someone help me with this one?
What is the norm of this functional on $l^2$?
$$f(x) = \sum_{n=1}^\infty \frac{3^n\cdot x_n}{\sqrt{(n+1)!}}, \qquad x=(x_1,x_2,\ldots)\in l^2.$$
It is easy to see this functional is bounded ($\|f(x)\|\leq \sum_{n=1}^\infty \frac{3^n}{\sqrt{(n+1)!}} ... | 2014-03-12T20:13:35 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/256411/norm-of-a-linear-functional-f",
"openwebmath_score": 0.9416971206665039,
"openwebmath_perplexity": 691.3503483318943,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639644850629,
"... |
http://mathhelpforum.com/advanced-statistics/53182-another-joint-pdf-question.html | # Thread: Another Joint pdf question
1. ## Another Joint pdf question
Hi,
Iam trying to find the conditional pdf f(x│1/2) and have the joint pdf of
f(x,y) = 3.3 - y , 0 < y < < 1
Iam not sure how to set up the limits of integration to get f(x│y) because of the $x^2$.
Any help how be apprectiated
2. Originally Po... | 2017-01-24T16:38:06 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/advanced-statistics/53182-another-joint-pdf-question.html",
"openwebmath_score": 0.7847086191177368,
"openwebmath_perplexity": 397.5118179081487,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.971563964073382... |
https://www.tutorialspoint.com/program-to-find-out-the-points-achievable-in-a-contest-in-python | # Program to Find Out the Points Achievable in a Contest in Python
PythonServer Side ProgrammingProgramming
Suppose we are in a programming contest where there are multiple problems but the contest ends when we solve one problem. Now if we have two lists of numbers of the same length called points, and chances. To ex... | 2021-05-05T22:19:36 | {
"domain": "tutorialspoint.com",
"url": "https://www.tutorialspoint.com/program-to-find-out-the-points-achievable-in-a-contest-in-python",
"openwebmath_score": 0.4988800883293152,
"openwebmath_perplexity": 2851.5311817741654,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715... |
https://www.physicsforums.com/threads/two-capacitors-in-series-for-two-circuits.781209/ | # Two Capacitors in series for two circuits
1. Nov 10, 2014
### andre220
1. The problem statement, all variables and given/known data
A capacitor of capacitance $C_1 = C$ is charged by a battery of potential difference $V_0$. After fully charged, it is disconnected from the batter and reconnected in series to a seco... | 2017-10-19T05:55:04 | {
"domain": "physicsforums.com",
"url": "https://www.physicsforums.com/threads/two-capacitors-in-series-for-two-circuits.781209/",
"openwebmath_score": 0.5969593524932861,
"openwebmath_perplexity": 556.1186973637234,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.97156396366170... |
https://mathoverflow.net/questions/278291/what-are-traces | # What are traces?
Let $A$ be a Noetherian commutative ring and Let $A\rightarrow B$ be a finite flat homomorphism of rings. We can thus form the so called "trace" $\mathrm{Tr_{B/A}}:B\rightarrow A$, which is a homomorphism of $A$ - modules defined as follows:
Every $b\in B$ acts on $B$ (when viewed as an $A$ - modul... | 2020-10-20T01:10:20 | {
"domain": "mathoverflow.net",
"url": "https://mathoverflow.net/questions/278291/what-are-traces",
"openwebmath_score": 0.9618522524833679,
"openwebmath_perplexity": 131.5387352205324,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639636617015,
"lm_q2_score": 0.67233169... |
https://www.physicsforums.com/threads/hermite-polynomials.235638/ | # Hermite Polynomials.
Gold Member
## Main Question or Discussion Point
I need to show that:
$$\sum_{n=0}^{\infty}\frac{H_n(x)}{n!}y^n=e^{-y^2+2xy}$$
where H_n(x) is hermite polynomial.
Now I tried the next expansion:
$$e^{-y^2}e^{2xy}=\sum_{n=0}^{\infty}\frac{(-y)^{2n}}{n!}\cdot \sum_{k=0}^{\infty}\frac{(2xy)^k}{k... | 2020-02-19T04:17:41 | {
"domain": "physicsforums.com",
"url": "https://www.physicsforums.com/threads/hermite-polynomials.235638/",
"openwebmath_score": 0.8275939226150513,
"openwebmath_perplexity": 1370.0590653992488,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639636617014,
"lm_q2_score": ... |
https://en.wikipedia.org/wiki/Arc_diagram | # Arc diagram
An arc diagram of the Goldner–Harary graph. The red dashed line segment shows where this graph was subdivided to make it Hamiltonian.
In graph drawing, an arc diagram is a style of graph drawing, in which the vertices of a graph are placed along a line in the Euclidean plane, with edges being drawn as s... | 2021-06-16T09:21:47 | {
"domain": "wikipedia.org",
"url": "https://en.wikipedia.org/wiki/Arc_diagram",
"openwebmath_score": 0.806196928024292,
"openwebmath_perplexity": 385.71421362904005,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639636617014,
"lm_q2_score": 0.672331699179286,
"lm_q1q2... |
http://bdigital.unal.edu.co/32351/ | Powers of two in generalized fibonacci sequences
Bravo, Jhon J. and Luca, Florian (2012) Powers of two in generalized fibonacci sequences. Revista Colombiana de Matemáticas; Vol. 46, núm. 1 (2012); 67-79 0034-7426 .
Texto completo
Vista previa
420kB
4kB
Resumen
The $k-$generalized Fibonacci sequence $\big(F_{n}... | 2020-01-18T12:37:14 | {
"domain": "edu.co",
"url": "http://bdigital.unal.edu.co/32351/",
"openwebmath_score": 0.8097476959228516,
"openwebmath_perplexity": 6125.588299542557,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639718953155,
"lm_q2_score": 0.6723316926137812,
"lm_q1q2_score": 0.65... |
https://www.emathhelp.net/calculators/calculus-1/domain-and-range-calculator/ | # Domain and Range Calculator
The calculator will find the domain and range of the single-variable function.
Enter a function of one variable:
Enter an interval:
Required only for trigonometric functions. For example, [0, oo) or (-2, 5pi]. If you need oo, type inf.
If the calculator did not compute something or you ... | 2022-07-01T04:51:06 | {
"domain": "emathhelp.net",
"url": "https://www.emathhelp.net/calculators/calculus-1/domain-and-range-calculator/",
"openwebmath_score": 0.6248582005500793,
"openwebmath_perplexity": 2437.0345173368696,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639611916168,
"lm_q2_... |
https://socratic.org/calculus/derivatives/tangent-line-to-a-curve | # Tangent Line to a Curve
## Key Questions
• The "tangent slope" is the slope of the tangent line. It is also called "the slope of the tangent" and "the slope of the curve at a point".
You could use infinitesimals...
#### Explanation:
The slope of the tangent line is the instantaneous slope of the curve. So if we ... | 2020-02-23T02:26:45 | {
"domain": "socratic.org",
"url": "https://socratic.org/calculus/derivatives/tangent-line-to-a-curve",
"openwebmath_score": 0.8842041492462158,
"openwebmath_perplexity": 246.44023713514585,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639702485928,
"lm_q2_score": 0.672... |
http://mathhelpforum.com/algebra/184698-masked-algebric-inequality.html | Math Help - Masked algebric inequality
Prove that $\sqrt{a^2-ab+b^2}+\sqrt{b^2-bc+c^2} >\sqrt{a^2+ac+c^2}$,if a,b,c>0.
Originally Posted by TheodorMunteanu
Prove that $\sqrt{a^2-ab+b^2}+\sqrt{b^2-bc+c^2} >\sqrt{a^2+ac+c^2}$,if a,b,c>0.
I'm not so sure, here it goes...
I used Inequality of arithmetic and geometric me... | 2016-06-25T14:54:06 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/algebra/184698-masked-algebric-inequality.html",
"openwebmath_score": 0.8909898400306702,
"openwebmath_perplexity": 716.0312735438018,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639702485929,
"lm_q2_sco... |
http://www.talkstats.com/threads/probability-of-most-expensive-item-automatically-being-purchased.64298/ | # Probability of most expensive item automatically being purchased
#### DoubleoJosh
##### New Member
Hi all, many thanks for any input on this perplexing problem:
If a sporting good store offers a coupon as follows:
Free soccer ball OR free T-shirt OR free Hat
And their POS system automatically credits the highest... | 2019-08-17T21:00:05 | {
"domain": "talkstats.com",
"url": "http://www.talkstats.com/threads/probability-of-most-expensive-item-automatically-being-purchased.64298/",
"openwebmath_score": 0.17184695601463318,
"openwebmath_perplexity": 2394.561992296598,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.... |
https://gmatclub.com/forum/if-x-and-y-are-positive-integers-is-4x-7y-291631.html | GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 24 Apr 2019, 13:49
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customize... | 2019-04-24T20:49:00 | {
"domain": "gmatclub.com",
"url": "https://gmatclub.com/forum/if-x-and-y-are-positive-integers-is-4x-7y-291631.html",
"openwebmath_score": 0.6417821645736694,
"openwebmath_perplexity": 4111.103305351112,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639694252315,
"lm_q2... |
https://math.stackexchange.com/questions/2432282/does-improper-integral-of-continuous-non-zero-and-periodic-function-diverge | # Does Improper integral of continuous, non zero and periodic function diverge?
Let $f:\mathbb R\to\mathbb R$ be a continuous, non zero and periodic function. Does $\int_0^\infty f(x)dx$ diverge?
I think that the answer is yes. My thought was that if we assume $f$ has, in each period, a point $x_0$ in which $f(x_0)\n... | 2019-09-20T20:24:45 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/2432282/does-improper-integral-of-continuous-non-zero-and-periodic-function-diverge",
"openwebmath_score": 0.983338475227356,
"openwebmath_perplexity": 185.82364219923693,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YE... |
https://math.stackexchange.com/questions/2962478/trace-inequality-for-a-product-of-p-s-d-matrices-and-their-pseudo-inverse | # Trace inequality for a product of p.s.d. matrices and their pseudo inverse.
Let $$A, B_i$$ be positive semidefinite real matrices. Let $$\dagger$$ stand for the Moore-Penrose generalized inverse. I managed to prove that if $$\operatorname{Ran}B_1\subseteq\operatorname{Ker}B_2$$ then $$\operatorname{trace}\left((A + ... | 2019-05-24T08:48:14 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/2962478/trace-inequality-for-a-product-of-p-s-d-matrices-and-their-pseudo-inverse",
"openwebmath_score": 0.937405526638031,
"openwebmath_perplexity": 139.8045640151906,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",... |
http://mathhelpforum.com/advanced-algebra/134182-inner-product-space-proof-question-print.html | # Inner product space proof question
• March 16th 2010, 07:27 PM
firebio
Inner product space proof question
Prove that {u,v}=0 for all v belongs to V iff u=0.
{u,v}= $\Sigma$ u*v, where u* is conjugate of u
If u=0 then {u,v} is obviously 0.
now im not sure how to prove it the other way
If {u,v}=0 then u=0
$\Sigma... | 2015-07-01T15:42:06 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/advanced-algebra/134182-inner-product-space-proof-question-print.html",
"openwebmath_score": 0.9778611063957214,
"openwebmath_perplexity": 3784.8079158847945,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563... |
http://mathhelpforum.com/algebra/128816-dot-product-question.html | Math Help - Dot Product Question
1. Dot Product Question
Maybe I'm overlooking the simplicity of the question, but I keep coming up with answers separate to the given answer.
The angle between $\vec a$ and $\vec b$ is $79 deg$.
Find $p$ if $\vec a = 6\vec i + 3 \vec j - 2 \vec k$ and $\vec b = -2 \vec i + p \vec j ... | 2016-05-04T06:44:07 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/algebra/128816-dot-product-question.html",
"openwebmath_score": 0.8357636332511902,
"openwebmath_perplexity": 426.65998339436464,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639694252316,
"lm_q2_scor... |
https://stacks.math.columbia.edu/tag/095J | ## 59.72 Auxiliary lemmas on morphisms
Some lemmas that are useful for proving functoriality properties of constructible sheaves.
Lemma 59.72.1. Let $U \to X$ be an étale morphism of quasi-compact and quasi-separated schemes (for example an étale morphism of Noetherian schemes). Then there exists a partition $X = \co... | 2022-05-25T23:49:19 | {
"domain": "columbia.edu",
"url": "https://stacks.math.columbia.edu/tag/095J",
"openwebmath_score": 0.9757256507873535,
"openwebmath_perplexity": 139.37314943913938,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639694252316,
"lm_q2_score": 0.6723316926137812,
"lm... |
http://www.physicsforums.com/showthread.php?t=492466 | # Find equation of the tangent plane
by andrey21
Tags: equation, plane, tangent
P: 466 Find the equation of the tangent plane to the level surface of the scalar field $$\xi$$(x,y,z) = x2+y2+z2 at the point (1,1,2) Looking the work through this question with someone, not to sure where to start.
HW Helper P: 3,307 i w... | 2014-08-22T19:39:37 | {
"domain": "physicsforums.com",
"url": "http://www.physicsforums.com/showthread.php?t=492466",
"openwebmath_score": 0.5047823190689087,
"openwebmath_perplexity": 675.0674536918788,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639694252315,
"lm_q2_score": 0.672331692613... |
http://projectsforpreschoolers.com/books/vector-methods | # Vector Methods
Format: Paperback
Language:
Format: PDF / Kindle / ePub
Size: 7.91 MB
Click on any part of the photo of Bill Gates, hold the left mouse button down, then drag it to "warp" the photo into a topologically equivalent distortion. The present book grew out of notes written for a course by the same name... | 2016-10-21T13:02:00 | {
"domain": "projectsforpreschoolers.com",
"url": "http://projectsforpreschoolers.com/books/vector-methods",
"openwebmath_score": 0.4671308994293213,
"openwebmath_perplexity": 914.1274789806552,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639686018702,
"lm_q2_score... |
https://proxies-free.com/definite-integrals-on-counting-the-areas-covered-by-holes-in-a-function-in-integration/ | # definite integrals – On counting the areas covered by holes in a function in integration
As far as I know, holes in a function at the endpoints of an interval aren’t usually given any importance while integrating over that interval. For example, while calculating the area under the fractional part function from 0 to... | 2021-04-22T04:25:26 | {
"domain": "proxies-free.com",
"url": "https://proxies-free.com/definite-integrals-on-counting-the-areas-covered-by-holes-in-a-function-in-integration/",
"openwebmath_score": 0.9454137682914734,
"openwebmath_perplexity": 338.06956624025736,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1... |
https://socratic.org/questions/how-do-you-solve-x-3-10-1 | # How do you solve x/3=-10?
Jun 14, 2018
$x = - 30$
#### Explanation:
When dealing with equalities, you can multiply both sides by a same number, and the inequality will preserve its truth value. By this, I mean that if you start with a true equality, it will still be true, for example
$3 = 3 \setminus \to 3 \cdot... | 2020-08-09T23:29:56 | {
"domain": "socratic.org",
"url": "https://socratic.org/questions/how-do-you-solve-x-3-10-1",
"openwebmath_score": 0.8520316481590271,
"openwebmath_perplexity": 323.94920039606495,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018702,
"lm_q2_score": 0.672331692613... |
https://www.mathscinotes.com/2017/01/measuring-a-chamfer-angle-using-gage-balls/ | # Measuring a Chamfer Angle Using Gage Balls
Quote of the Day
The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato.
— Alfred North Whitehead, Process and Reality, p. 39 [Free Press, 1979]
## Introduction
Figure 1: Chamfer Angle Measuremen... | 2019-10-14T13:24:47 | {
"domain": "mathscinotes.com",
"url": "https://www.mathscinotes.com/2017/01/measuring-a-chamfer-angle-using-gage-balls/",
"openwebmath_score": 0.7956954836845398,
"openwebmath_perplexity": 2320.787962364989,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018702,
"l... |
http://math.stackexchange.com/questions/677574/homeomorphism-between-space-and-product | Homeomorphism between Space and Product
Do there exist examples of non-empty, infinite spaces X not equipped with the discrete topology for with $X \cong X \times X$?
-
I think the answer is no, by dimension reasons if the dimension falls in the interval $(0, infty)$; I think Lebesgue covering dimensions is multiplic... | 2014-11-27T14:47:10 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/677574/homeomorphism-between-space-and-product",
"openwebmath_score": 0.949070930480957,
"openwebmath_perplexity": 145.31672083076145,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563968601870... |
http://math.stackexchange.com/questions/18721/how-did-they-simplify-this-function/18723 | # How did they simplify this function
I'm currently practicing differentiation. The exercise I currently have is the following
Find the derivative of:
$(x + 6)^3 (9 x^3 - 2)^5$
Okay, well I can do that now. When I do this I uses the chain/product rule to get the following result:
$3(x+6)^2 (9x^3 -2)^5 + 45(x+6)^3 ... | 2014-08-23T19:29:00 | {
"domain": "stackexchange.com",
"url": "http://math.stackexchange.com/questions/18721/how-did-they-simplify-this-function/18723",
"openwebmath_score": 0.8468016982078552,
"openwebmath_perplexity": 120.91561746511533,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018... |
http://mathematica.stackexchange.com/questions/34157/differentiating-a-cumulative-distribution-function-which-has-a-discontinuity-at | # Differentiating a Cumulative Distribution Function which has a discontinuity at $0$
I want to take the derivative of a distribution function which has a discontinuity at $0$. Here is the function:
temp0[x_] :=If[Element[x, Reals], Sqrt[Pi]*(Erfc[(-2 + Log[2])/(2*Sqrt[2])] + (1 + Erf[(1 +Piecewise[{{(x - Log[2])/2, ... | 2015-04-28T06:57:18 | {
"domain": "stackexchange.com",
"url": "http://mathematica.stackexchange.com/questions/34157/differentiating-a-cumulative-distribution-function-which-has-a-discontinuity-at",
"openwebmath_score": 0.6945838928222656,
"openwebmath_perplexity": 3623.5278912219164,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. Y... |
https://math.stackexchange.com/questions/2369861/analyzing-multiple-time-series-describing-the-same-feature | # Analyzing multiple time series describing the same feature
I'm currently facing a problem for which I am given several time series that all describe the feature.
E.g. the height of several trees of the same kind was measured over a period of time each. However, the time periods are rather random and do not necessar... | 2019-05-26T05:41:36 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/2369861/analyzing-multiple-time-series-describing-the-same-feature",
"openwebmath_score": 0.4686655104160309,
"openwebmath_perplexity": 580.6007000179044,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_scor... |
https://uglyduckling.nl/blog/financial-engineering/short-rate-models/reproduction-example-1-of-generalized-procedure-for-building-trees/ | # Reproduction Example 1 of Generalized Procedure for Building Trees
In a recent (2014) paper John Hull and Alan White demonstrate a generalized method for the construction of short rate trees. Keen to understand the model we tried to reproduce the results of the first example mentioned in the paper on page 10. The ex... | 2019-05-22T09:19:44 | {
"domain": "uglyduckling.nl",
"url": "https://uglyduckling.nl/blog/financial-engineering/short-rate-models/reproduction-example-1-of-generalized-procedure-for-building-trees/",
"openwebmath_score": 0.5243708491325378,
"openwebmath_perplexity": 1018.0106714706499,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1.... |
https://www.physicsforums.com/threads/optimizing-cone-calculus.568387/ | # Optimizing Cone - Calculus
1. Jan 17, 2012
### girlygirl93
Hello there :) I'm having tons of trouble figuring out how to finish this problem.
A cone is to be constructed having a given slant height of l>0 . Find the radius and height which give maximal volume.
I am unsure of which variables to keep in order for i... | 2017-09-23T14:35:16 | {
"domain": "physicsforums.com",
"url": "https://www.physicsforums.com/threads/optimizing-cone-calculus.568387/",
"openwebmath_score": 0.8133781552314758,
"openwebmath_perplexity": 772.2146510044865,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018701,
"lm_q2_scor... |
https://www.physicsforums.com/threads/quick-questions-about-modular-arithmetic.76797/ | # Quick questions about modular arithmetic
1. May 24, 2005
### johnnyICON
$$99999^{99} + 1$$
As $$99999 \equiv$$24$$(mod \25)$$
Can I say then:
$$99999^{99} + 1 \equiv$$24$$^{99} + 1(mod \25)$$, or is it
$$99999^{99} + 1 \equiv$$24$$^{99}(mod \25) + 1$$,
or are these two the same things?
2. May 24, 2005
### shmoe
... | 2016-12-04T02:03:47 | {
"domain": "physicsforums.com",
"url": "https://www.physicsforums.com/threads/quick-questions-about-modular-arithmetic.76797/",
"openwebmath_score": 0.7832014560699463,
"openwebmath_perplexity": 1183.5817335328052,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563968601870... |
http://mathhelpforum.com/pre-calculus/221112-verifying-trig-identity-print.html | # Verifying a trig identity
Printable View
• August 9th 2013, 11:45 AM
curt26
Verifying a trig identity
I have
1/sin^2(t) + 1/cos^2(t) = 1/sin^2(t)-sin^4(t)
I started on the right side of the identity and got to this stage:
1/sin^2(t) + 1/1-sin^2(t)
On the left side of the identity I got to this stage:
1/sin^2(t... | 2014-09-17T20:28:50 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/pre-calculus/221112-verifying-trig-identity-print.html",
"openwebmath_score": 0.9491896033287048,
"openwebmath_perplexity": 2072.2345803514704,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018701,
"... |
http://mathhelpforum.com/differential-geometry/140931-compact-space-continuous-function.html | # Math Help - compact space and continuous function
1. ## compact space and continuous function
Hey, I have a topology problem here:
Let K be a compact subset in R and let f : K → R be a continuous function. Prove
that for every ε > 0 there exists Lε > 0 such that
|f (x) − f (y)| ≤ Lε |x − y| + ε , for every x, y ∈ K... | 2015-01-30T06:31:25 | {
"domain": "mathhelpforum.com",
"url": "http://mathhelpforum.com/differential-geometry/140931-compact-space-continuous-function.html",
"openwebmath_score": 0.9185299277305603,
"openwebmath_perplexity": 199.10785620877206,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.97156396... |
http://www.mathworks.com/matlabcentral/newsreader/view_thread/287712 | MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi
# Thread Subject: Question on the derivate /calculus of a 2-norm matrix . Thanks a lot
Subject: Question on the derivate /calculus of a 2-norm matrix . Thanks a lot
From: Antony
### Antony
Date: 25 Jul, 2010 13:30:08
Message: 1 of 9
Hi, all, I won... | 2015-01-29T04:49:10 | {
"domain": "mathworks.com",
"url": "http://www.mathworks.com/matlabcentral/newsreader/view_thread/287712",
"openwebmath_score": 0.7917736768722534,
"openwebmath_perplexity": 1324.284585546996,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639686018702,
"lm_q2_score": 0.... |
https://ocw.mit.edu/courses/15-071-the-analytics-edge-spring-2017/pages/trees/keeping-an-eye-on-healthcare-costs-the-d2hawkeye-story/quick-question-349/ | # 4.3 Keeping an Eye on Healthcare Costs: The D2Hawkeye Story
## Quick Question
Suppose that instead of the baseline method discussed in the previous video, we used the baseline method of predicting the most frequent outcome for all observations. This new baseline method would predict cost bucket 1 for everyone.
Wha... | 2022-09-27T04:04:37 | {
"domain": "mit.edu",
"url": "https://ocw.mit.edu/courses/15-071-the-analytics-edge-spring-2017/pages/trees/keeping-an-eye-on-healthcare-costs-the-d2hawkeye-story/quick-question-349/",
"openwebmath_score": 0.6797542572021484,
"openwebmath_perplexity": 2713.126347422589,
"lm_name": "Qwen/Qwen-72B",
"lm_labe... |
https://questions.examside.com/past-years/jee/question/pusing-binomial-theorem-the-value-of-0999sup3sup-wb-jee-mathematics-mathematical-induction-and-binomial-theorem-4fy0pqldre3ucrwu | NEW
New Website Launch
Experience the best way to solve previous year questions with mock tests (very detailed analysis), bookmark your favourite questions, practice etc...
1
### WB JEE 2009
using binomial theorem, the value of (0.999)3 correct to 3 decimal places is
A
0.999
B
0.998
C
0.997
D
0.995
## Explanation
... | 2022-10-01T04:13:45 | {
"domain": "examside.com",
"url": "https://questions.examside.com/past-years/jee/question/pusing-binomial-theorem-the-value-of-0999sup3sup-wb-jee-mathematics-mathematical-induction-and-binomial-theorem-4fy0pqldre3ucrwu",
"openwebmath_score": 0.795353353023529,
"openwebmath_perplexity": 3958.016146460809,
"lm... |
https://www.transtutors.com/questions/ratio-analysis-graham-railways-inc-is-evaluating-its-operations-and-provides-the-fol-2567737.htm | # Ratio Analysis Graham Railways Inc. is evaluating its operations and provides the following infor...
Ratio Analysis
Graham Railways Inc. is evaluating its operations and provides the following information:
2016 2015 2014 Net income $62,854$45,852 $35,456 Total assets at year-end$381,500 $246,250$145,490 Common sh... | 2018-08-19T15:50:00 | {
"domain": "transtutors.com",
"url": "https://www.transtutors.com/questions/ratio-analysis-graham-railways-inc-is-evaluating-its-operations-and-provides-the-fol-2567737.htm",
"openwebmath_score": 0.2451724261045456,
"openwebmath_perplexity": 9058.663666797169,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YE... |
https://math.stackexchange.com/questions/1113973/show-that-for-any-1-leq-p-infty-the-set-l1-cap-lp-is-a-dense-subset-of/1114013 | # Show that for any $1\leq p<\infty$, the set $L^1\cap L^p$ is a dense subset of $L^p$
Show that for any $1\leq p<\infty$, the set $L^1\cap L^p$ is a dense subset of $L^p$.
Let $f\in L^p-L^1$. We need to find a sequence $\{\phi_n\}_n$ in $L^1\cap L^p$ converging to $f$. And I know the simple approximation theorem.
I... | 2020-01-24T08:59:05 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/1113973/show-that-for-any-1-leq-p-infty-the-set-l1-cap-lp-is-a-dense-subset-of/1114013",
"openwebmath_score": 0.9880672693252563,
"openwebmath_perplexity": 50.21320001519721,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2.... |
http://www.cram.com/flashcards/econ-102a-midterm-399168 | • Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front
### How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card betwee... | 2018-02-20T23:43:46 | {
"domain": "cram.com",
"url": "http://www.cram.com/flashcards/econ-102a-midterm-399168",
"openwebmath_score": 0.8074411749839783,
"openwebmath_perplexity": 3493.718788697782,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639677785088,
"lm_q2_score": 0.6723316926137812,
... |
http://clay6.com/qa/2031/true-or-false-if-each-of-the-three-matrices-of-the-same-order-are-symmetric | Home >> CBSE XII >> Math >> Matrices
# True or False: If each of the three matrices of the same order are symmetric matrix.
## 1 Answer
TRUE Given A=$A'\; B=B'\; C=C'$. From the property of transpose of a matrix we have $(A+B+C)'=A'+B'+C'$. $A'+B'+C'$ is symmetric matrix.
answered Mar 12, 2013
edited M... | 2017-10-18T18:40:17 | {
"domain": "clay6.com",
"url": "http://clay6.com/qa/2031/true-or-false-if-each-of-the-three-matrices-of-the-same-order-are-symmetric",
"openwebmath_score": 0.7775851488113403,
"openwebmath_perplexity": 2309.511008346857,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563967... |
http://openstudy.com/updates/55b1482fe4b04559507a993e | ## A community for students. Sign up today
Here's the question you clicked on:
## anonymous one year ago ***fan and medal***
• This Question is Closed
1. anonymous
Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coa... | 2017-01-23T07:04:07 | {
"domain": "openstudy.com",
"url": "http://openstudy.com/updates/55b1482fe4b04559507a993e",
"openwebmath_score": 0.36867207288742065,
"openwebmath_perplexity": 2256.7084929422094,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639677785087,
"lm_q2_score": 0.6723316926137... |
https://math.stackexchange.com/questions/3006270/edge-colourings-of-an-icosahedron | # Edge colourings of an icosahedron
I'm referring to problem A6 of the 2017 Putnam competition -- the question is "How many ways exist to colour the labelled edges of an icosahedron such that every face has two edges of the same colour and one edge of another colour, where the colours are either red, white or blue?".
... | 2019-09-17T10:46:52 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/3006270/edge-colourings-of-an-icosahedron",
"openwebmath_score": 0.6706711649894714,
"openwebmath_perplexity": 306.57380226783783,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639677785087,
... |
http://mathoverflow.net/questions/19999/finding-all-roots-of-a-polynomial/20009 | # Finding all roots of a polynomial
Is it possible, for an arbitrary polynomial in one variable with integer coefficients, to determine the roots of the polynomial in the Complex Field to arbitrary accuracy? When I was looking into this, I found some papers on homotopy continuation that seem to solve this problem (for... | 2016-02-13T21:55:02 | {
"domain": "mathoverflow.net",
"url": "http://mathoverflow.net/questions/19999/finding-all-roots-of-a-polynomial/20009",
"openwebmath_score": 0.8142266869544983,
"openwebmath_perplexity": 386.1924630538555,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639677785087,
"lm... |
https://web2.0calc.com/questions/help_66997 | +0
# Help!
0
333
2
A quadrilateral is called a "parallelogram" if both pairs of opposite sides are parallel. Show that if \(WXYZ\) is a parallelogram, then \(\angle W = \angle Y\) and \(\angle X = \angle Z\) .
Jun 29, 2019
#1
+2
Its SuerBoranJacobs
I'll refer to the diagram below:
We know that WZ || XY and WX ... | 2020-07-10T22:23:47 | {
"domain": "0calc.com",
"url": "https://web2.0calc.com/questions/help_66997",
"openwebmath_score": 0.9077751040458679,
"openwebmath_perplexity": 10691.358039221293,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639677785087,
"lm_q2_score": 0.6723316926137812,
"lm_... |
http://yetanothermathprogrammingconsultant.blogspot.com/2018/11/quadratic-programming-with-binary.html | ## Saturday, November 10, 2018
### Quadratic Programming with Binary Variables
Quadratic Programming models where the quadratic terms involve only binary variables are interesting from a modeling point view: we can apply different reformulations.
Let's have a look at the basic model:
\begin{align}\min\>& \color{Dar... | 2019-02-16T01:08:27 | {
"domain": "blogspot.com",
"url": "http://yetanothermathprogrammingconsultant.blogspot.com/2018/11/quadratic-programming-with-binary.html",
"openwebmath_score": 0.9905318021774292,
"openwebmath_perplexity": 1173.1828636734217,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971... |
https://math.stackexchange.com/questions/1329615/parabolicity-of-high-order-pdes | # Parabolicity of high order PDEs
I know that the traditional classification of PDEs into parabolic, elliptic, and hyperbolic is applicable for the second order equations. However, I often see remarks about parabolicity of higher order PDEs in various articles. In particular, the equations of the thin film family are ... | 2019-06-24T13:22:02 | {
"domain": "stackexchange.com",
"url": "https://math.stackexchange.com/questions/1329615/parabolicity-of-high-order-pdes",
"openwebmath_score": 0.9164597392082214,
"openwebmath_perplexity": 534.4868602114507,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639677785087,
"... |
https://calculus7.org/2021/01/07/riesz-projection-on-polynomials/ | # Riesz projection on polynomials
Consider a trigonometric polynomial of degree ${n}$ with complex coefficients, represented as a Laurent polynomial ${L(z) = \sum\limits_{k=-n}^n c_k z^k}$ where ${|z|=1}$. The Riesz projection of ${L}$ is just the regular part of ${L}$, the one without negative powers: ${R(z) = \sum\l... | 2021-01-22T06:09:35 | {
"domain": "calculus7.org",
"url": "https://calculus7.org/2021/01/07/riesz-projection-on-polynomials/",
"openwebmath_score": 0.9668256640434265,
"openwebmath_perplexity": 196.5329899062604,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639669551474,
"lm_q2_score": 0.672... |
https://itl.nist.gov/div898/handbook/apr/section4/apr413.htm | 8. Assessing Product Reliability
8.4. Reliability Data Analysis
8.4.1. How do you estimate life distribution parameters from censored data?
## A Weibull maximum likelihood estimation example
Reliability analysis using Weibull data We will plot Weibull censored data and estimate parameters using data from a previous e... | 2021-10-16T18:05:40 | {
"domain": "nist.gov",
"url": "https://itl.nist.gov/div898/handbook/apr/section4/apr413.htm",
"openwebmath_score": 0.7947454452514648,
"openwebmath_perplexity": 818.4510926265164,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639669551474,
"lm_q2_score": 0.6723316926137... |
http://leeee.top/2020/MSBD5004-Mathematical-Methods-for-Data-Analysis-Homework-2/ | # 终其一生，我们只不过在寻找自己
0%
MSBD5004 Mathematical Methods for Data Analysis Homework 2
# Q1
Let $(V,|\cdot|)$ be a normed vector space.
(a) Prove that, for all $x, y \in V$,
(b) Let $\left\{x_{k}\right\}_{k \in \mathbb{N}}$ be a convergent sequence in $V$ with limit $x \in V$. Prove that
(Hint: Use part (a).)
(c) Let $\... | 2022-05-25T05:52:29 | {
"domain": "leeee.top",
"url": "http://leeee.top/2020/MSBD5004-Mathematical-Methods-for-Data-Analysis-Homework-2/",
"openwebmath_score": 0.9799769520759583,
"openwebmath_perplexity": 337.17984744259996,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563966131786,
"lm_q2_s... |
https://f7ed.com/2022/08/16/mit6875-lec15/ | # 「Cryptography-MIT6875」: Lecture 15
In this series, I will learn MIT 6.875, Foundations of Cryptography, lectured by Vinod Vaikuntanathan.
Any corrections and advice are welcome. ^ - ^
Topics Covered:
• Sequential vs Parallel Repetition: reduce soundness error
• Proof of Knowledge
• PoK of DLOG
• Non-Interactive ZK... | 2022-10-01T17:12:53 | {
"domain": "f7ed.com",
"url": "https://f7ed.com/2022/08/16/mit6875-lec15/",
"openwebmath_score": 0.9193819761276245,
"openwebmath_perplexity": 2608.6923615531127,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.6723316926137812,
"lm_q1q2_s... |
http://openstudy.com/updates/55fb5471e4b0c2f0ec8ea323 | anonymous one year ago give an example of a countable collection of disjoint open intervals
1. zzr0ck3r
$$\{(n-\frac{1}{2}, n+\frac{1}{2})\subset \mathbb{R} \mid n\in \mathbb{N}\}$$
2. zzr0ck3r
Make sense @carr099 ?
3. anonymous
can you give some explanation
4. zzr0ck3r
sure, it will look like this $$\{(0.5,1.5... | 2016-10-24T18:42:50 | {
"domain": "openstudy.com",
"url": "http://openstudy.com/updates/55fb5471e4b0c2f0ec8ea323",
"openwebmath_score": 0.9133765697479248,
"openwebmath_perplexity": 703.2893814859823,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.672331692613781... |
https://www.physicsforums.com/threads/complex-replacement-justification.871323/ | Complex Replacement: Justification?
• B
Hi,
Is there a proof that complex replacement is a valid way to solve a differential equation? I'm lacking some intuition on the idea that under any algebraic manipulations the real and imaginary parts of an expression don't influence each other.
For example, if I'm given:
$$... | 2021-04-20T04:27:28 | {
"domain": "physicsforums.com",
"url": "https://www.physicsforums.com/threads/complex-replacement-justification.871323/",
"openwebmath_score": 0.655491828918457,
"openwebmath_perplexity": 105.04950710683026,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639661317859,
... |
https://omega-nerez.cz/5ibvo/ols-estimator-derivation-e2dbea | Hope you enjoyed reading and thanks again! . Ultimately, this method of derivation hinges on the problem being a sum of squares problem and the OLS Assumptions, although, these are not limiting reasons not to use this method. I like the matrix form of OLS Regression because it has quite a simple closed-form solution (t... | 2021-03-03T02:04:05 | {
"domain": "omega-nerez.cz",
"url": "https://omega-nerez.cz/5ibvo/ols-estimator-derivation-e2dbea",
"openwebmath_score": 0.7829805016517639,
"openwebmath_perplexity": 909.1998690483122,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.6723316... |
https://gateoverflow.in/95817/tifr2017-b-10 | 396 views
A vertex colouring of a graph $G=(V, E)$ with $k$ coulours is a mapping $c: V \rightarrow \{1, \dots , k\}$ such that $c(u) \neq c(v)$ for every $(u, v) \in E$. Consider the following statements:
1. If every vertex in $G$ has degree at most $d$ then $G$ admits a vertex coulouring using $d+1$ colours.
2. Eve... | 2018-09-22T03:31:31 | {
"domain": "gateoverflow.in",
"url": "https://gateoverflow.in/95817/tifr2017-b-10",
"openwebmath_score": 0.6606214046478271,
"openwebmath_perplexity": 842.8574897910493,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES",
"lm_q1_score": 0.971563966131786,
"lm_q2_score": 0.6723316926137811,
"lm_... |
https://stacks.math.columbia.edu/tag/01ZS | ## 32.11 Characterizing affine schemes
If $f : X \to S$ is a surjective integral morphism of schemes such that $X$ is an affine scheme then $S$ is affine too. See [A.2, Conrad-Nagata]. Our proof relies on the Noetherian case which we stated and proved in Cohomology of Schemes, Lemma 30.13.3. See also [II 6.7.1, EGA].
... | 2020-05-31T22:49:42 | {
"domain": "columbia.edu",
"url": "https://stacks.math.columbia.edu/tag/01ZS",
"openwebmath_score": 0.9950900077819824,
"openwebmath_perplexity": 116.161200558226,
"lm_name": "Qwen/Qwen-72B",
"lm_label": "1. YES\n2. YES\n\n",
"lm_q1_score": 0.9715639661317859,
"lm_q2_score": 0.6723316926137812,
"lm_q... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.