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Omni-MATH / Let R denote the set of real numbers. Find all functions f:R→R such that f(xf(y)+y)+f(−f(x))=f(yf(x)−y)+y for all x,y∈R · Discussion

Discussing Let R denote the set of real numbers. Find all functions f:R→R such that f(xf(y)+y)+f(−f(x))=f(yf(x)−y)+y for all x,y∈R · Omni-MATH

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