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Homework Help: Sum of Series help

  1. Jun 20, 2012 #1
    1. The problem statement, all variables and given/known data
    What is the sum of Ʃ 1.2476n^.2476 from n=1 to 35.

    2. Relevant equations

    3. The attempt at a solution
    It isn't an arithmetic, geometric, or a p-series. I have tried using L'hopital's rule and using partial fractions. Where am I going wrong?
  2. jcsd
  3. Jun 20, 2012 #2


    Staff: Mentor

    True enough.
    Why would you think that L'Hopital's rule or partial fractions are applicable here?

    This is a finite series, so the problem boils down to adding 35 numbers, 1.2476 + 2.2476 + 3.2476 + ... + 35.2476, and then multiplying that sum by 1.2476.

    Seems like kind of a pointless problem to me, unless there is some technique that can be used to simplify things. Nothing comes to mind, though.
  4. Jun 20, 2012 #3

    Ray Vickson

    User Avatar
    Science Advisor
    Homework Helper

    I doubt that there is any nice closed-form expression for the sum. What is stopping you from evaluating the sum numerically (using a spreadsheet or a package such as Wolfram Alpha)?

  5. Jun 20, 2012 #4
    I guess I was too lazy, and I really want to have all sum formulas at my access.
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