(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

so this one says the sum of the series starting at n = 1 to inf. of ((-1)^n)arctan(n)/(n^2)

2. Relevant equations

Either a ratio test or just an abs. conv. test

3. The attempt at a solution

not sure how to play this one out, honestly. I see some semblance of hope shimmering there but I am not strong enough to reach for it....... *tear

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# Homework Help: Absolute convergence

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