Determine the interval of convergence of the series _ n=1 ^ (-1)^n x^ ,n n .

MATHEMATICS · Subjective · AP · Calculus BC · Infinite Sequences and Series · Infinite Sequences and Series

Problem

Determine the interval of convergence of the series ∑n=1∞(−1)nx nn.\sum_{n=1}^{\infty}\frac{(-1)^n x^{\,n}}{\sqrt{n}}.

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