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Help with Integration

  1. Oct 27, 2009 #1
    1. The problem statement, all variables and given/known data
    Given that:

    The integral between infinity and -infinity of

    e-ax^2 dx = [tex]\sqrt{\pi/a}[/tex]

    show that

    The integral between 0 and infinity of

    x2.e-ax^2 dx = 1/4[tex]\sqrt{\pi/a^3}[/tex]


    2. Relevant equations



    3. The attempt at a solution
    don't really know where to start
     
  2. jcsd
  3. Oct 27, 2009 #2

    lurflurf

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    Homework Helper

    integrate by parts
     
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