Finding solution of $A\mathbf{x} = \mathbf{0}$ from rref over gf(2)
113987
Kernels and reduced row echelon form - explanation
42699
Solve for $f(x)$ if $f(f(x))=6x-f(x)$
5180
How to show $\alpha\int_a^cf(x)dx+\beta \int_c^b f(x)dx =0$ means $f(x)=0$ everywhere $?$
118049
Show that $\mathbb{R}^{\mathbb{R}} = U_{e} \oplus U_{o}$
54797
Find the continuous function defined over $[0,1]$ such that $\int_0^1f(x){\rm d}x=1, \int_0^1 xf(x){\rm d}x=a$ and $\int_0^1x^2f(x){\rm d}x=a^2 .$
141286
When is $\mathbf{X}^{T}\mathbf{X}+\lambda\mathbf{I}$ invertible?
144192
Showing $\int_{\mathbb R} \mid F(x)-G(x)\mid dx = \int_0^1 \mid F^{-1}(u)-G^{-1}(u)\mid du$ with $F$, $G$ CDF functions
114254
Zero divisors in $A[x_1,x_2,\dots,x_r]$
2342
How does equality $\mathfrak{m}^\mathfrak{m} = 2^\mathfrak{m}$ in $\sf{ZF}$ relate to the axiom of choice?
55984
How can I find the answer to $\varphi(2^{400} + 2)$?
144859
Finding parameters for $f(x) = x^2 + 2(m − a)x + 3am −2 = 0$ that satisfy a condition.
72769
How find this function $xf(x^2)=f(x),x>0$
109295
Proving $1-\exp(-4x^2/ \pi) \ge \text{erf}(x)^2$
103019
Find all functoins $f: \mathbb R \rightarrow \mathbb R$ such that $\forall x,y \in \mathbb R f(xy+f(x))=xf(y)+f(x)$
27809
Find the function equation $f(x+f(y)+yf(x))=y+f(x)+xf(y)$
125647
Solutions to the matrix equation $\mathbf{AB-BA=I}$ over general fields
76148
Show that $\exists c \in \mathbb{R} : f(c) = 0$