AoPS Wiki:Problem of the Day/September 20, 2011
< AoPS Wiki:Problem of the Day
Revision as of 15:50, 20 September 2011 by Negativebplusorminus (talk | contribs) (Created page with "If <math>f(x)=x^2</math>, find <math>f(f(x+1))</math>.")
If , find .