Question: please help with full proof: 1. (a) Prove the following Theorem OO Theorem 1. Let S an be a series. n=1 2k lim C an

please help with full proof:

1. (a) Prove the following Theorem OO Theorem 1. Let S an be a series. n=1 2k lim C an exists IF kwon=1 lim an = 0 n-too THEN the series _an is convergent. n=1

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