Y by peelybonehead, megarnie, Rounak_iitr, Blue_banana4, buddyram, deduck, ItsBesi
Find all functions
that satisfy
for all
.
Proposed by Carl Schildkraut

![\[
f(x^2-y)+2yf(x)=f(f(x))+f(y)
\]](http://latex.artofproblemsolving.com/f/b/b/fbb693770cd90d8a144026608074122e54da5802.png)

Proposed by Carl Schildkraut
This post has been edited 1 time. Last edited by KevinYang2.71, Mar 21, 2024, 3:13 PM