Can we recover $X$ from $K = X^T X$?
74532
Solve for $ A $ from $ A {A}^{T} $
18670
What is the gradient of $x^T A\, x$ with respect to the matrix $A$?
15809
The problem of x = ln(x)
44701
How to find maximum $x$ that $k^x$ divides $n!$
157918
Finding the derivative of $x^x$
147503
Solving $4x = e^x$ without graphing and looking for intersection
127000
When does $V = \ker(f) \oplus \operatorname{im}(f)$?
71437
How is the derivative of $\textrm{Trace}\left\{ X^T A X B\right\}$ with respect to $X$ equal to $AXB + A^TXB^T$?
1394
How do we know that $F = ma$, not $F = k \cdot ma$
9223
Finding $\iiint_K (x^2 -z^2)\, dx\, dy \,dz$
86518
Does $X$ have a lower bound?
22004
Inverse of $y = x^3 + x $?
128355
Does $e^{tx} + x = t - 1$ yield a solution/s to $\frac{dx}{dt} = \frac{e^{-tx} - x}{e^{-tx} + t}$?
112334
Real roots of a polynomial of real co-efficients , with the co-efficients of $x^2 , x$ and the constant term all $1$
52040
"Inverse" of an $n\times k$ matrix.
37813
If $T\colon \mathbb R^n \to \mathbb R^n $ linear and $T^2 = kT$
50760
Solutions to $y^2 = x^3 + k$?