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Math Help - sum of |(cos(n^10-16n^2))/n|

  1. #1
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    sum of |(cos(n^10-16n^2))/n|

    so i want to show that sum |(cos(n^10-16n^2))/n| from n=1 to n=infinity where n is a member of the natural numbers diverges, so if i show that the sequence of partial sums is unbounded then this is equivalent right? i was wondering if this is the right approach to take? (i would like to figure this out so i just want a little help not the full proof or anything thanks)
    Last edited by hmmmm; October 20th 2010 at 12:07 AM.
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  2. #2
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    It seems you forgot to mention what you are trying to show the sum is equivalent to.
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  3. #3
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    oh yeah sorry i want to show that the sum is divergent
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