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Homework Help: Integrate with e^-3x

  1. Feb 9, 2012 #1
    I need some help with this equation.


    Can someone tell me how to get started?
  2. jcsd
  3. Feb 9, 2012 #2


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    Science Advisor
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    Gold Member

    Write it as ##xe^{-3x}## and use integration by parts.
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