Prove that if a n converges absolutely, then a 2 n also converges. Give an example where

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Prove that if ∑an converges absolutely, then ∑a2n also converges. Give an example where ∑an is only conditionally convergent and ∑a2n diverges.

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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