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!

Q&A Precalculus homework

  1. Sep 11, 2006 #1
    I need help...
    Write the partial fraction decomposition of the rational expression.
    4X^2-1/ 2X(X+1)^2
  2. jcsd
  3. Sep 12, 2006 #2
    What have you tried? Here's a quick summary of the steps...

    step 1:
    4x^2-1/2x(x+1)^2 = A/2x + B/(x+1) + C/(x+1)^2

    step 2:
    4x^2-1/(x+1)^2 = A and evaluate at x=0

    Step 3:
    *Solve for C before you solve for B:
    4x^2-1/2x = A(x+1)^2/2x + B(x+1) + C and evaluate at x=-1

    Step 4:
    Then, differentiate the equation in the step 3 with respect to x

    Step 5:
    Finally, evaluate equation in step 4 at x=-1

    You should now have all your constants, A, B and C
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Q&A Precalculus homework
  1. HELP Precalculus (Replies: 2)