Results 1 to 1 of 1

Math Help - integration by parts help

  1. #1
    Member
    Joined
    Sep 2009
    Posts
    242
    Thanks
    1

    integration by parts help

    I just want to make sure I got this integration by parts thing right...

    \int \frac{\partial f}{\partial x}\frac{\partial x}{\partial y}\partial y=\frac{\partial f}{\partial x}x(y)-X(y)

    (where X(y) is the integral of x(y))

    Does that look all right? And then the derivative of this result w.r.t. y would be...

    \frac{\partial f}{\partial x}\frac{\partial x}{\partial y}-x(y)

    Right?

    Thanks

    [Edit: Nevermind! I just realized that the first term in the integral can be treated as a constant, so no need for integration by parts.]

    [Edit again: Nevermind the last edit. That was a bad idea. Nonetheless I have figured out the problem.]
    Last edited by rainer; October 9th 2011 at 05:13 PM.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: January 11th 2012, 03:30 PM
  2. Replies: 8
    Last Post: September 2nd 2010, 01:27 PM
  3. Replies: 0
    Last Post: April 23rd 2010, 04:01 PM
  4. integration by parts
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 18th 2009, 07:21 AM
  5. Replies: 1
    Last Post: February 17th 2009, 07:55 AM

Search Tags


/mathhelpforum @mathhelpforum