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Evaluate Sum

Source: Canadian Mathematical Olympiad - 1995 - Problem 1.

May 9, 2011
algebra proposedalgebra

Problem Statement

Let f(x)=9x9x+3f(x)=\frac{9^x}{9^x + 3}. Evaluate i=11995f(i1996)\sum_{i=1}^{1995}{f\left(\frac{i}{1996}\right)}.