How to calculate $(X^tX)^{-1}X^tY$?
7038
Why does MatrixForm affect calculations?
135514
$ \text{range } T' = (\ker T)^0$
94585
Solving for a variable that's an exponent
80648
What's $(-1)^{2/3}\; $?
122948
$x^{x^{x^{\dots}}}=2$, what is the value of $x$?
37650
Find $\sum_{m=0}^n\ (-1)^m m^n {n \choose m}$
55094
How to show $i^{-1} = -i$?
135747
Prove $x^{rs}-1=(x^s-1)(x^{s(r-1)}+...+x^s+1)$
2616
What is the antiderivative of $x^{x^{x^{x...}}}$?
78736
Check my proof that $(ab)^{-1} = b^{-1} a^{-1}$
76297
What is the inverse of the $\mbox{vec}$ operator?
78632
Summation equation for $2^{x-1}$
8676
Is there any "superlogarithm" or something to solve $x^x$?
103223
If $x^a$ is $x$ multiplied $a$ times, then how does $x^{-1}$ make sense?
18019
pow (x,y) in Java
142757
Math.pow with negative numbers and non-integer powers
106934
$x^x=y$. How to solve for $x$?