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Thread: Don't know how to do this improper integral?

  1. November 1st 2010, 03:11 PM #1
    elpermic
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    Don't know how to do this improper integral?

    The integral is 25/(x^2+27x+26) with limits of integration [0, ∞]

    I know that this integral is going to be convergent.. I just don't know how to solve for the integral
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  2. November 1st 2010, 03:27 PM #2
    Plato
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    \dfrac{25}{x^2+26x+27}=\dfrac{1}{x+1}-\dfrac{1}{x+26}
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  3. November 2nd 2010, 05:07 AM #3
    HallsofIvy
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    Slight typo in Plato's post:
    \frac{25}{x^2+ 27x+ 26}= \frac{1}{x+1}-\frac{1}{x+ 26}.
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