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f(t^2 +t +1) = t for all real t >= 0

Source: Norwegian Mathematical Olympiad 1999 - Abel Competition p1a

February 11, 2020
functionalgebra

Problem Statement

Find a function ff such that f(t2+t+1)=tf(t^2 +t +1) = t for all real t≥0t \ge 0
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