What are the characters of the following series, respectively? n=1(-1) arctan (n) 00 n+1 n+1 7...

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What are the characters of the following series, respectively? Σn=1(-1)" arctan (n) 00 √n+1 n²+1 7² 00 ²n=1 ncos (nn) 2" A) conditionally convergent, absolutely convergent, absolutely convergent B) absolutely convergent, convergent, absolutely convergent C) conditionally convergent, divergent, conditionally convergent D) absolutely convergent, divergent, divergent E) divergent, convergent, divergent What are the characters of the following series, respectively? Σn=1(-1)" arctan (n) 00 √n+1 n²+1 7² 00 ²n=1 ncos (nn) 2" A) conditionally convergent, absolutely convergent, absolutely convergent B) absolutely convergent, convergent, absolutely convergent C) conditionally convergent, divergent, conditionally convergent D) absolutely convergent, divergent, divergent E) divergent, convergent, divergent