Results 1 to 2 of 2

Math Help - trig integration

  1. #1
    Junior Member
    Joined
    Jan 2009
    Posts
    68

    trig integration

    Can someone please show me how to integrate sin^3 (x). cos^2 (x).

    Thank you!!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Calculus26's Avatar
    Joined
    Mar 2009
    From
    Florida
    Posts
    1,271
    Rewrite as

    sin(x)sin^2(x)cos^2(x)= sin(x)(1-cos^2(x))cos^2(x)

    Let u = cos(x) du = -sin(x)

    you obtain -integral((u^2-u^4)du)

    Typically when you have sin^n(x)cos^m(x) if n is odd separate out the sin(x) and convert to cosines . If m is odd separate out a cos(x) and convert the remaining cosines to sines
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Trig Integration
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 18th 2009, 02:01 PM
  2. trig integration
    Posted in the Calculus Forum
    Replies: 6
    Last Post: February 6th 2009, 05:56 AM
  3. Integration with u-sub and trig
    Posted in the Calculus Forum
    Replies: 2
    Last Post: September 16th 2008, 03:50 PM
  4. Trig integration
    Posted in the Calculus Forum
    Replies: 4
    Last Post: June 20th 2008, 07:58 PM
  5. trig integration
    Posted in the Calculus Forum
    Replies: 6
    Last Post: December 10th 2007, 05:28 AM

Search Tags


/mathhelpforum @mathhelpforum