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Math Help - Integral of (xe^x)/(1+x)

  1. #1
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    Integral of (xe^x)/(1+x)

    Yeah so do I use substitution or integration by parts???
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  2. #2
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    Jan 2010
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    if you set u=x+1, you will be able to break the function 2 integrals, and the e^(u-1) can be simplified to (e^u)/e which is merely a constant.
    the first integral comes to e^(x), but the second one... i think you need the Ei function for it, correct me if i'm wrong
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