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Integration by parts ! can you solve this problem please

  1. Mar 28, 2012 #1
    calculate : ∫x²e-x3dx by parts please i need details :) thank you very much
     
    Last edited: Mar 28, 2012
  2. jcsd
  3. Mar 28, 2012 #2

    HallsofIvy

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    Re: integration by parts ! can you solve this problem plz

    Don't use integration by parts!! Let [itex]u= x^3[/itex].
     
  4. Mar 28, 2012 #3
    Re: integration by parts ! can you solve this problem plz

    Is it necessary to solve this using integration by parts? There's a nice substitution that makes the integral straightforward. I couldn't easily see a nice way to separate the integral.
     
  5. Mar 28, 2012 #4
    Re: integration by parts ! can you solve this problem plz

    i know that i can do it with u-substitution but i'm asked to integrate it by parts !
     
  6. Mar 28, 2012 #5

    HallsofIvy

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    Re: integration by parts ! can you solve this problem plz

    Then let u= 1/3, [itex]dv= 3x^2e^{-x^3}[/itex]
     
  7. Mar 28, 2012 #6
    i do not think that it's legal :) i mean that there is surely another method thank you anyway
     
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