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Math Help - definate integral of 'e'

  1. #1
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    definate integral of 'e'

    integral (from -a to a) of e^[(-x^2)/(a^2)] dx

    I found the indefinate integral in an integral table online, but wasn't sure how the factorials went when used on a definate.
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  2. #2
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    Quote Originally Posted by ryukolink View Post
    integral (from -a to a) of e^[(-x^2)/(a^2)] dx

    I found the indefinate integral in an integral table online, but wasn't sure how the factorials went when used on a definate.
    You did? What did you find? That particular function does NOT have an elementary anti-derivative. (It can be written in terms of the "error function", erf(x).)
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