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Omni-MATH / Determine all pairs (f,g) of functions from the set of real numbers to itself that satisfy g(f(x+y))=f(x)+(2x+y)g(y) for all real numbers x and y. [i] · Discussion

Discussing Determine all pairs (f,g) of functions from the set of real numbers to itself that satisfy g(f(x+y))=f(x)+(2x+y)g(y) for all real numbers x and y. [i] · Omni-MATH

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