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Homework Help: How do you integrate this

  1. Sep 6, 2010 #1
    1. The problem statement, all variables and given/known data
    int((x^2)(e^-3lnx))

    anyone tips for this?


    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Sep 6, 2010 #2
    Hint:

    [tex]
    e^{-3 \, \ln{(x)}} = e^{\ln{(x^{-3})}} = ?
    [/tex]
     
  4. Sep 6, 2010 #3
    now I get int (x^2)(e^(1/x^3)) then? stuck here
     
  5. Sep 6, 2010 #4
    You are wrong. What does [itex]e^{\ln{y}}[/itex] equal to? Use the property that the (natural) logarithm is the inverse function of the (natural) exponential function.
     
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