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Omni-MATH / Let R^(+) be the set of positive real numbers. Determine all functions f:R^(+) → R^(+) such that for all positive real numbers x and y: f(x+f(xy))+y=f(x)f(y)+1 [i]Ukraine · Discussion

Discussing Let R^(+) be the set of positive real numbers. Determine all functions f:R^(+) → R^(+) such that for all positive real numbers x and y: f(x+f(xy))+y=f(x)f(y)+1 [i]Ukraine · Omni-MATH

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