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Omni-MATH / Find all functions f :Bbb Rto BbbZ such that (f(f(y)−x))²+f(x)²+f(y)²=f(y)⋅(1+2f(f(y))), for all x, y in BbbR. · Discussion

Discussing Find all functions f :Bbb{ R}to Bbb{Z} such that (f(f(y)−x))²+f(x)²+f(y)²=f(y)⋅(1+2f(f(y))), for all x, y in Bbb{R}. · Omni-MATH

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