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Thread: Integral Help

  1. September 24th 2009, 11:10 AM #1
    BearN
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    Integral Help

    I need help with this integral:
    Limits from 0 to infinity
    X^(3/2) * exp(-X)

    Hope someone understands this and can help me
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  2. September 24th 2009, 11:16 AM #2
    artvandalay11
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    The antiderivative associated with this integral is not trivial, you end up with the Erf function in there

    If you are just looking for an answer, Mathematica's Integral calculator (they have one online too) gives me \frac{3}{4}\sqrt{\pi}
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  3. September 24th 2009, 03:24 PM #3
    mr fantastic
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    Quote Originally Posted by BearN View Post
    I need help with this integral:
    Limits from 0 to infinity
    X^(3/2) * exp(-X)

    Hope someone understands this and can help me
    Read this: Gamma function - Wikipedia, the free encyclopedia
    Follow Math Help Forum on Facebook and Google+
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