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Integration Problem

  • 06-05-2013 6:24pm
    #1
    wretcheddomain
    Registered Users, Registered Users 2 Posts: 3,094 ✭✭✭


    Hi, just wondering can anyone help me out with this, very unsure of it to be honest and would like assistance if it's available. :)

    x/ x^2(X-5)(X+4) dx

    Thanks in advance if you've any help. :pac:


Comments

  • #2
    Prodigious
    Closed Accounts Posts: 2,827 ✭✭✭Prodigious


    Have you tried multiplying out the bottom then using substitution?


  • #3
    TheBody
    Registered Users, Registered Users 2 Posts: 5,633 ✭✭✭TheBody


    wretcheddomain wrote: »
    Hi, just wondering can anyone help me out with this, very unsure of it to be honest and would like assistance if it's available. :)

    x/ x^2(X-5)(X+4) dx

    Thanks in advance if you've any help. :pac:

    Hi there!!

    Is the problem:
    [latex]\int\frac{x}{x^2(x-5)(x+4)}dx[/latex]

    If it is, partial fractions is what I'd try first.


  • #4
    wretcheddomain
    Registered Users, Registered Users 2 Posts: 3,094 ✭✭✭wretcheddomain


    I haven't done integration in years so not even sure how to start!

    This is part of refreshment so really unsure at the moment!

    I tend to learn from working backwards from the method but can't start this method hence why I'm stuck.


  • #5
    TheBody
    Registered Users, Registered Users 2 Posts: 5,633 ✭✭✭TheBody


    wretcheddomain wrote: »
    I haven't done integration in years so not even sure how to start!

    This is part of refreshment so really unsure at the moment!

    I tend to learn from working backwards from the method but can't start this method hence why I'm stuck.

    Maybe begin watching some videos on youtube on the topic. You could start with this:

    http://www.youtube.com/watch?v=7cgOf3alK40

    The guy who is presenting the video has tons of other videos on all sorts of maths problems. He is very good.


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