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Math Help - integrating e

  1. #1
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    integrating e

    Hello, ive tried everything i know how to do and i cant do this(!):

    \int{e^{x^2}}dx

    Its not very clear but thats e to the power of x squared.

    Thanks!
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  2. #2
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    Quote Originally Posted by darksupernova View Post
    Hello, ive tried everything i know how to do and i cant do this(!):

    \int{e^{x^2}}dx

    Its not very clear but thats e to the power of x squared.

    Thanks!
    It cannot be done using a finite number of elementary functions (this can be proved, by the way). An answer can be found using the Error Function erf(x): Error function - Wikipedia, the free encyclopedia
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  3. #3
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    yup.. this is a very interesting question.. it cannot be solved directly due the the reason provided above.. however, the ans can be approximate by converting e^(x^2) to some polynomial using lagrange interpolation or using taylor series. It should be able to get some very close approximation
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  4. #4
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    wow thanks very much guys! wondered why i was struggeling so much!

    Thanks
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