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Integrating partial fractions

  1. Sep 17, 2009 #1
    Hello :smile:

    I've been stuck on this question for almost 3 hours now, and I still have no idea what to do. We haven't done a question like this in class, although we have done integration with partial fractions.

    1. The problem statement, all variables and given/known data

    Evaluate:

    http://img43.imageshack.us/img43/4110/34519231.jpg [Broken]


    2. Relevant equations



    3. The attempt at a solution
    http://img230.imageshack.us/img230/7321/21305382.jpg [Broken]

    http://img230.imageshack.us/img230/4774/89099153.jpg [Broken]

    If I make A and B equal 0, I get C = 6. Then I just end up with the same integral as I started with.

    I'd really appreciate any help with this. :smile:

    Thank you
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Sep 17, 2009 #2

    LCKurtz

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    Science Advisor
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    Gold Member

    No need for partial fractions. Try letting u = 2x - 1.
     
  4. Sep 18, 2009 #3
    I was convinced it had something to do with partial fractions. :redface:

    I've just done the u substitution thingy and 4/3, which is the correct answer.

    Thank you very much for your help. :smile:
     
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