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MATH / Find the number of functions f(x), taking positive real numbers to real numbers, such that f(xy)=f(x)f(y)−2for all positive real numbers x and y. · Discussion

Discussing Find the number of functions f(x), taking positive real numbers to real numbers, such that f(xy)=f(x)f(y)−2for all positive real numbers x and y. · MATH

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