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Homework Help: Help with equation

  1. May 3, 2009 #1
    http://users.on.net/~rohanlal/glgl.jpg [Broken]
    I don't understand how the 2nd line changes to what is shown in the 3rd line.
    What rule is applied here?
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. May 3, 2009 #2


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    Homework Helper
    Gold Member

    Use integration by parts.
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