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Homework Help: Integration help

  1. Sep 16, 2008 #1
    1. The problem statement, all variables and given/known data
    Integrate: ∫e^∛x





    2. Relevant equations



    3. The attempt at a solution
    this is my attempt but I keep getting stuck
    ∫e^∛x u=∛x
    du=1/(3x^(2⁄3)0 dx
    3x^(2⁄3) du= dx
    3∫e^u x^(2⁄3) du

    After this step I have tried integration by parts and a second substitution but like I said before I keep getting stuck. Any hints to get me going in the right direction are greatly appreciated.
     
  2. jcsd
  3. Sep 16, 2008 #2

    HallsofIvy

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    Science Advisor

    I suppose I might be able to integrate that if I knew what "∛" meant! I don't know what you see on your reader but I see a little square that indicates a code that does not correspond to a character. How about rewriting your question without any "special codes"?
     
  4. Sep 17, 2008 #3
    that "little square + x"= x^(1/3)

    once you let u=x^(1/3) and you want no x anymore...Notice that x^(2/3)=u^2 would make the integration nice looking:!!)
     
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