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Math Help - Integration

  1. #1
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    Integration

    Evaluate \int e^y y^{-y}dy


    I tried integrating by parts by setting u= y^{-y} and dv= e^y but it didn't work.
    Please help me out. Thanks.
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  2. #2
    MHF Contributor matheagle's Avatar
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    Quote Originally Posted by elmo View Post
    Evaluate \int e^y y^{-y}dy


    I tried integrating by parts by setting u= y^{-y} and dv= e^y but it didn't work.
    Please help me out. Thanks.
    Are you sure it's \int e^y y^{-y}dy?
    Even Taylor doesn't seem to work here.
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