If 2f(x) = f(2x), 3f(x) = f(3x), 4f(x) = f(4x)……. etc. then f(1) + – InterviewSolution

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1.	If 2f(x) = f(2x), 3f(x) = f(3x), 4f(x) = f(4x)……. etc. then f(1) + f(2) + f(3) + ……..+ f(n) equals to where f(1) = 1 :
Answer» N(n+1) 0 `n(n+1)/2` n! SOLUTION :f(1) = 1 f(2) = 2 f(3) = 3 f(4) = 4 … … … f(n) = n `therefore f(1)+f(2)+f(3)+…+f(n) = n(n+1)/2`

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