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MathNet 2026 — Part 07 Question 130

Math Olympiad Vault · MathNet 2026 — Part 07

Question 130

Define $f(x) = \frac{a^{x}}{a^{x} + \sqrt{a}}$ for any $a \gt 0$. Evaluate
$$
\sum_{i=1}^{2012} f\left(\frac{i}{2013}\right).
$$