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Homework Help: Integration by Parts homework assistance

  1. Nov 20, 2012 #1
    1. The problem statement, all variables and given/known data

    ∫x3e5x2 dx

    2. Relevant equations


    3. The attempt at a solution

    I've tried this one a few times, but keep getting answers that are just out there. Could someone, if possible, work out just the beginning.
  2. jcsd
  3. Nov 20, 2012 #2


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    Homework Helper

    OK, just one hint to get you started. You should start by expressing the problem as:

    [tex]\int (x^2).(xe^{5x^2})dx[/tex]
  4. Nov 20, 2012 #3
    Hmm okay, got it.

    So let's say U = x2
    dU = 2x

    dv = xe5x2

    Then, plug into the equation, and you get....

    (x2)(1/10e5x2) - ∫(1/10e5x2)2x dx

    EDIT: Just got it, thanks a lot for your time :).
    Last edited: Nov 20, 2012
  5. Nov 20, 2012 #4


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    Homework Helper

    No worries. :smile:
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