If $i^2=-1$, at one point undefined, then why not define $\frac00$?
19655
Why don't we define "imaginary" numbers for every "impossibility"?
1567
In C++11, does `i += ++i + 1` exhibit undefined behavior?
154264
$f \in C[-1,1]$, Prove ${\lim_{h \to 0^+}}{\int_{-1}^1 \frac{h}{h^2+x^2}f(x)\,dx} = \pi f(0)$
17707
Why is ${x^{\frac{1}{2}}}$ the same as $\sqrt x $?
80710
Does $\int_{-1}^1 \frac 1 x dx$ equal zero?
77764
Is "$a + 0i$" in every way equal to just "$a$"?
95057
Possible fake proof of $1= -1$
68155
Explanation why $\frac{(x-1)!-(x-1)}x$ is always an integer for prime $x$
96328
Proving $e^{i\pi} = -1$ without proving $e^{ix} = \cos x + i\sin x$
31165
Is this workaround used by my book to find the value of $1/0$ legitimate?
94627
What's wrong with this derivation that $i\hbar = 0$?
27969
Why does $\frac{1}{x} < 4$ have two answers?
109674
If $(I-T)^{-1}$ exists, can it always be written in a series representation?
2891
How to make the imaginary part of a +0. I zero globally?
17963
I have learned that 1/0 is infinity, why isn't it minus infinity?
14633
What's the thing with $\sqrt{-1} = i$
122076
A one line proof that one is zero using Mathematica 10