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Thread: Help with nth partial sum?

  1. #1 Help with nth partial sum? 
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    Given some natural number n find the nth partial sum for:



    I find this question really difficult! If anyone could help, it would be greatly appreciated. Thanks in advance!


    Last edited by m84uily; December 22nd, 2011 at 04:29 PM.
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  3. #2  
    Ophiolater Nehushtan's Avatar
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    Let where for each with . Then:









    Hence .

    Not so much really difficult as really complicated.


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