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Math Help - a problem about integral

  1. #1
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    a problem about integral

    could you look at this problem please. thanks for now.

    \int_{2}^{4}\frac{\sqrt{ln\left ( 9-x \right )}}{\sqrt{ln\left ( 9-x \right )}+\sqrt{ln(x+3)}}dx
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  2. #2
    Super Member girdav's Avatar
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    Re: a problem about integral

    Use the substitution t=6-x.
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