A short way to say f(f(f(f(x))))
72570
Notation for repeated application of function
156536
Defining functions as derivatives
18950
Show that $f$ has at most one fixed point
127558
If $f(x)=x-\int^{\frac{\pi}{2}}_0f(x)\sin(x)dx$ find the explicit function for $f(x)$ in its simplest form
144018
Integration by parts for f(x).g(x)
113005
What does this notation mean? $f(x) \equiv A$?
4178
Solve $f(x)f(2x^2) = f(2x^3+x)$
85739
Show that $f(x) = 0$ for all $x \in [a,b]$ given $|f'(x)| \leq C|f(x)| $
156778
Finding functions satisfying $f(f(x))+f(x)+x=0$
60348
How do I prove $F(a)=F(a^2)?$
14994
Showing a function $f$ cannot be surjective
125644
How to check f is surjective
134880
Is there a difference between $y(x)$ and $f(x)$
85085
Simplifying the derivative of $|x|$
158327
#define f(g,g2) g##g2
53024
$f(x)f(1/x)=f(x)+f(1/x)$
81720
$f(x) + f(x+f(y)) = y + f(f(x) + f(f(y)))$