1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Partial Fractions

  1. Nov 16, 2004 #1
    Hi I need some help getting started with this integral

    [tex]\int \frac {x^2+5x+2}{{x^4+x^2+1}}dx[/tex]

    Thanks in advance
  2. jcsd
  3. Nov 16, 2004 #2


    User Avatar

    Staff: Mentor

    Try working the denominator -

    [tex]x^4+x^2+1 = (x^4+2x^2+1)-x^2 [/tex]

    then use the identity

    [tex]x^2-y^2 = (x+y)(x-y)[/tex]
  4. Nov 16, 2004 #3


    User Avatar

    Staff: Mentor

    You were on the right track.

    To eliminate the [tex]x^3[/tex] term, C=-A.

    Then find 3 equations in three unknowns A, B, D.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Partial Fractions
  1. Partial Fractions (Replies: 5)

  2. Partial fractions (Replies: 2)

  3. Partial fraction (Replies: 4)

  4. Partial fraction (Replies: 3)