We just learned Alternating Series, but I am still unsure of the procedure. A couple of problems in the book have stumped me, and I need to test them for convergence.(adsbygoogle = window.adsbygoogle || []).push({});

1. Sum n=1 going to infinity of [cos(n*pi) / (n^(7/8))]

2. Sum n=1 going to infinity of (-n/5)^n

I am really lost, I'd really appreciate the help...

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# Testing for Convergence

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