Find all real numbers such that the series

converges.

We have

This series converges if and only if .

for .

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Stumbling Robot

A Fraction of a Dot
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Find all *x* such that the series *(-1)*^{n} (2^{n} sin^{2n}x) / n converges

Find all real numbers such that the series

converges.

We have

This series converges if and only if .

for .