Results 1 to 3 of 3
Like Tree1Thanks
  • 1 Post By BobP

Math Help - integration help

  1. #1
    Super Member
    Joined
    Sep 2008
    Posts
    607

    integration help

     \int^{2\pi}_{0} ( -2cost sint + sin^{2}t ) dt


    I know how to integrate sin^{2} but not sure how to do the first term?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jun 2009
    Posts
    660
    Thanks
    133

    Re: integration help

    \sin(2t) = 2\sin(t)\cos(t)
    Thanks from Tweety
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,420
    Thanks
    1330

    Re: integration help

    Or to integrate \int -2sin(\theta)cos(\theta)d\theta make the substitution u= cos(\theta). Then du= -sin(\theta)d\theta so the integral becomes 2\int u du.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: November 3rd 2010, 12:54 AM
  2. Replies: 2
    Last Post: November 2nd 2010, 04:57 AM
  3. Replies: 8
    Last Post: September 2nd 2010, 12:27 PM
  4. Replies: 2
    Last Post: February 19th 2010, 10:55 AM
  5. Replies: 6
    Last Post: May 25th 2009, 06:58 AM

Search Tags


/mathhelpforum @mathhelpforum