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If f(xy)=(f(x))/y+(f(y))/x holds for all...

If `f(xy)=(f(x))/y+(f(y))/x` holds for all real `x` and `y` greater than `0` and `f(x)` is a differentiable function for all `x >0` such that `f(e)=1/e` , then find `f(x)`

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