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Math Help - Improper Integrals.

  1. #1
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    Improper Integrals.

    The question is:
    Evaluate the improper integral for a>0.

    The integral is:
    the integral from 0 to infinity, of e^(-y/a)dy

    Can anyone just give me an idea of where I am going wrong? When I try to solve I get 'a', which apparently is incorrect. Thank you!
    Last edited by mr fantastic; September 25th 2011 at 04:26 PM. Reason: Title.
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  2. #2
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    Re: Improper Integrals- help?

    Quote Originally Posted by SaJoWa View Post
    The question is:
    Evaluate the improper integral for a>0.

    The integral is:
    the integral from 0 to infinity, of e^(-y/a)dy

    Can anyone just give me an idea of where I am going wrong? When I try to solve I get 'a', which apparently is incorrect. Thank you!
    The correct answer is a.
    May be you are imputing the answer incorrectly.
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  3. #3
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    Re: Improper Integrals- help?

    Quote Originally Posted by Plato View Post
    The correct answer is a.
    May be you are imputing the answer incorrectly.
    I was indeed! I figured it out. Sorry to trouble you!
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