Infinite Serieshard
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Evaluate the infinite sum S = \sum_{n=1}^{\infty} \arctan\left(\frac{2}{n^2}
ight).
Evaluate the infinite sum S = \sum_{n=1}^{\infty} \arctan\left(\frac{2}{n^2} ight).
Evaluate the infinite sum S = \sum_{n=1}^{\infty} \arctan\left(\frac{2}{n^2} ight).