Results 1 to 2 of 2

Math Help - integration pb.

  1. #1
    Newbie
    Joined
    Mar 2009
    Posts
    20

    integration pb.

    I cannnot integrate dx/sin(x)^4 .

    I guess there should be some transformation as starting point but i cannot really see so far which way to go. Tryed many different variations.
    thx.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Eater of Worlds
    galactus's Avatar
    Joined
    Jul 2006
    From
    Chaneysville, PA
    Posts
    3,001
    Thanks
    1
    There is a reduction formula for this. It is the same as

    \int csc^{4}(x)dx

    Try using: \int csc^{n}(x)dx=\frac{-1}{n-1}csc^{n-2}(x)cot(x)+\frac{n-2}{n-1}\int csc^{n-2}(x)dx

    Just use n=4 for your integral.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: November 3rd 2010, 01:54 AM
  2. Replies: 2
    Last Post: November 2nd 2010, 05:57 AM
  3. Replies: 8
    Last Post: September 2nd 2010, 01:27 PM
  4. Replies: 2
    Last Post: February 19th 2010, 11:55 AM
  5. Replies: 6
    Last Post: May 25th 2009, 07:58 AM

Search Tags


/mathhelpforum @mathhelpforum