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Thread: integration by parts problem

  1. April 21st 2010, 02:19 AM #1
    renlok
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    integration by parts problem

    is it possible to integrate something like e^x.\frac{1}{2\sqrt{x}}

    because neither part will cancel so i just keep getting stuck in a perpetual loop
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  2. April 21st 2010, 02:41 AM #2
    General
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    Note that : e^x=e^{\left( \sqrt{x} \right)^2}

    If you substitute u=\sqrt{x}, you will get :

    \int e^{u^2} \, du , which is well-known unelementary integral ..

    Your integral can not be expressed in terms of elemenetary integrals ..
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