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Math Help - Absolute, conditionally convergence or divergense?

  1. #1
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    Absolute, conditionally convergence or divergense?

    Oi

    Im stuck at following:

    I need to figure out weather this is absolute convergent, conditionally convergent or divergent.

    sum from 1->infinity of: ((-1)^n)*(3n^2+7n-1)/(3n^5+4n+1)

    Any hints or help is appreciated
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  2. #2
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    Quote Originally Posted by Zaph View Post
    Oi

    Im stuck at following:

    I need to figure out weather this is absolute convergent, conditionally convergent or divergent.

    sum from 1->infinity of: ((-1)^n)*(3n^2+7n-1)/(3n^5+4n+1)

    Any hints or help is appreciated
    perform the limit comparison test on the positive terms of the series with the known convergent series \sum \frac{1}{n^3} ...
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  3. #3
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    Thanx, i think i got it right, and found out it converges absolute cause the limit goes to 1.
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