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Omni-MATH / Find all functions f defined on all real numbers and taking real values such that f(f(y))+f(x−y)=f(xf(y)−x), for all real numbers x,y. · Discussion

Discussing Find all functions f defined on all real numbers and taking real values such that f(f(y))+f(x−y)=f(xf(y)−x), for all real numbers x,y. · Omni-MATH

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