I need help with calc!!! someone help me with this problem dealing with convergence and divergence.?

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I need help with calc!!! someone help me with this problem dealing with convergence and divergence.?

Determine whether the series is absolutely convergent, conditionally convergent or divergent.

summation from n=1 to infiniti
[(-1)^n]/(arc tan (n))^n

2007-10-04 20:26:53 · 2 answers · asked by nerdoman@sbcglobal.net 1 in Science & Mathematics ➔ Mathematics

2 answers

use the limit test.... i think this one does not approach 0 as the term goes to infinity

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2007-10-05 00:15:05 · answer #1 · answered by Alam Ko Iyan 7 · 0⤊ 0⤋

lim arctan (n) = pi/2>1 so lim a_n is not 0 and the series diverges

2007-10-05 10:09:03 · answer #2 · answered by santmann2002 7 · 0⤊ 0⤋