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Math Help - integral

  1. #1
    Newbie
    Joined
    Nov 2008
    Posts
    14

    integral

    plz help integrate

    5x^2+4x+54
    over
    (x-4)(x^2+9)

    i broke it into parts and it becomes
    6/(x-4)-x/(x^2+9)
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  2. #2
    Member
    Joined
    Dec 2008
    From
    Auckland, New Zealand
    Posts
    189

    integral

    \int \left( \frac{6}{x - 4} - \frac{x}{x^2 + 9} \right) \,dx


    Both fractions can be integrating using the rule: \int \frac{f\,'\,(x)}{f\,(x)} \,dx= ln[f(x)] + c
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