Y by Functional_equation, centslordm, HWenslawski, chessgocube, MathLuis, PRMOisTheHardestExam, megarnie, kikimyrt, Lasier, cubres
Let
denote the set of all positive real numbers. Find all functions
such that
for all 
Proposed by Amadej Kristjan Kocbek, Jakob Jurij Snoj




Proposed by Amadej Kristjan Kocbek, Jakob Jurij Snoj
This post has been edited 2 times. Last edited by menpo, Dec 22, 2020, 12:50 PM