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Math Help - Integration: do I use integration by parts?

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    Integration: do I use integration by parts?

    im trying to integrate 15xe^(-x^2) on [0,1] and I cant figure out what to do. I think you are supposed to integrate by parts, but i cant even figure out where to begin, let alone assing a u or dv.
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by bam017 View Post
    im trying to integrate 15xe^(-x^2) on [0,1] and I cant figure out what to do. I think you are supposed to integrate by parts, but i cant even figure out where to begin, let alone assing a u or dv.
    no. substitution, u = -x^2

    or get around this by noting that you have

    - \frac {15}2 \cdot -2xe^{-x^2}

    which is of the form - \frac {15}2 u'e^u
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