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Math Help - Integral Help

  1. #1
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    Integral Help

    I would like to know how do you prove that the integral of c/cos u*sqrt(cos^2u-c^2) du= -arccos(c/sqrt(1-c^2)*tan u)?
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  2. #2
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    Re: Integral Help

    One way to prove it would be to differentiate the RHS and see if you get the LHS...
    Thanks from MarkFL
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