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math.enthusiast9
  • Member for 1 year, 7 months
  • Last seen more than a week ago
  • Seattle, Washington
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12
Find all functions $ f(x^2+y^2) + f(xf(y) + f(x)f(y)) = (f(x+y))^2. $
Mar 30
4
Inequality with complex numbers with the same modulus
Sep 20, 2023
4
Algebraic inequality using AM-GM
Sep 30, 2023
4
Show that there are only finitely many pairs of positive integers $(n, m)$ such that $d(m!) = n!$.
May 29
3
$M$ is inside the parallelogram $ABCD$. If $\angle MBA=\angle MDA$, then $\angle MAB = \angle MCB$ [closed]
Jul 11, 2023
3
n complex numbers inside a disk with center $A$ and radius 1
Sep 20, 2023
3
Find all natural numbers $x$ and $y$ such that $\frac{\sqrt{x} + \sqrt{y}}{\sqrt[3]{x^2 + y^2}}$ is a natural number
Nov 2, 2023
3
Find all functions $f: \mathbb{R} \rightarrow \mathbb{R} $ such that $f(xf(y) + f(x+y)) = y(f(x)+1)+f(x) \forall x, y \in \mathbb{R}$
Jan 10
3
Game of cards and divisors
Jan 25
3
Finding all $x, y$ natural numbers
Feb 3