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Math Help - Integral

  1. #1
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    Integral

    integral of: dx/(x^2 - 9)


    is it

    1/6 * ln|(x-3)(x+3)|+c

    if not help
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  2. #2
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    Krizalid's Avatar
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    I'm not gonna tell you the answer so why don't you check your result by contemplating its derivative? If it yields the integrand, we're okay. (Otherwise, try it again.)
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  3. #3
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    thanks you. that was a good idea
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