Apparently, this user prefers to keep an air of mystery about them.
4 If p is prime and p|$a^n$ prove that $p^n|a^n$ Sep 24 '13
1 Constrained optimization max $ f(x,y) = x+y$ subject to $x^2+y^2 \leq 4, x \geq0, y \geq0$ Apr 19 '13
1 1) Suppose $g \circ f$ is one-to-one. Prove that $f$ is one to one. Does $g$ have to be also one-to-one? Jun 25 '13
1 Prove that $d^n(x^n)/dx^n = n!$ by induction Jun 25 '13