Results 1 to 4 of 4

Math Help - Use integration by parts: xe^x dx within limits 0-0.6

  1. #1
    Newbie
    Joined
    Jun 2011
    Posts
    12

    Use integration by parts: xe^x dx within limits 0-0.6

    Essentially thats it, I have to estimate with the trapezium rule (I can do this)

    then confirm with the integration by parts of

    xe^xdx


    but I just keep going round in circles.

    Help!

    Thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Jun 2011
    Posts
    12

    Re: Use integration by parts: xe^x dx within limits 0-0.6

    ha, Ive just done it! No bother.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,894
    Thanks
    691

    Re: Use integration by parts: xe^x dx within limits 0-0.6

    Quote Originally Posted by tjnortham View Post
    Essentially thats it, I have to estimate with the trapezium rule (I can do this)

    then confirm with the integration by parts of

    xe^xdx


    but I just keep going round in circles.

    Help!

    Thanks
    u = x ... dv = e^x \, dx

    du = dx ... v = e^x

    \int u \, dv = uv - \int v \, du

    now ... where is your problem?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Jun 2011
    Posts
    12

    Re: Use integration by parts: xe^x dx within limits 0-0.6

    thanks, I was putting v=x and du/dx as e^x and kept coming back with the original integration problem as the vdu/dx part.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: January 11th 2012, 02:30 PM
  2. Replies: 8
    Last Post: September 2nd 2010, 12:27 PM
  3. Integration by parts, limits
    Posted in the Calculus Forum
    Replies: 1
    Last Post: June 7th 2010, 06:49 PM
  4. Replies: 0
    Last Post: April 23rd 2010, 03:01 PM
  5. Replies: 1
    Last Post: February 17th 2009, 06:55 AM

Search Tags


/mathhelpforum @mathhelpforum