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Math Help - (probably) Easy U-substitution definite integral problem?

  1. #1
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    (probably) Easy U-substitution definite integral problem?

    \int^\pi_0 3cos^2(x)sin(x) dx

    I know how to find the area but I've tried various u's and I can't get anything to work.

    Thanks, chickeneaterguy
    Last edited by chickeneaterguy; November 21st 2010 at 09:17 AM.
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  2. #2
    MHF Contributor harish21's Avatar
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    Let u=\cos(x) and proceed.
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  3. #3
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    Quote Originally Posted by harish21 View Post
    Let u=\cos(x) and proceed.
    Holy crap...I feel retarded. Thanks a lot. I was doing it with sin and making the leftover cosx into sqrt(1-sin)... thanks for making my life easier
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