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Math Help - Integral help

  1. #1
    Newbie
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    Integral help

    How do you prove that the integral of x/(r*sqrt(r^2-x^2)dr= arccos(x/r)
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  2. #2
    MHF Contributor
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    Re: Integral help

    Hey sean606030.

    Hint: Try differentiating arc(x/r) using the chain rule (use the standard result for d/dx arccos(x))
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