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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- Apr 29th 2013, 06:10 PMsean60630Integral 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)?

- Apr 29th 2013, 06:42 PMProve ItRe: Integral Help
One way to prove it would be to differentiate the RHS and see if you get the LHS...