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The function f(x) satisfies f(xy) = xf(y) for all real numbers x and y. If f(1) = 25, find f(79).

 Aug 31, 2019
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\(f(xy)=xf(y)\\ f(79) = f(79 \cdot 1) = \\ 79 f(1) =79 \cdot 25 = 1975\)

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 Aug 31, 2019

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