2023 OIM Problems/Problem 2
Problem
Let 
be the set of integers. Find all functions 
such that:
![\[2023f(f(x))+2022x^2=2022f(x)+2023[f(x)]^2+1\]](http://latex.artofproblemsolving.com/8/4/8/8488b38ed3552451b2ff60fff095317126f2bc01.png)
for each integer 
.
Solution
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See also
https://sites.google.com/associacaodaobm.org/oim-brasil-2023/pruebas
