Find the partial fraction decomposition for the rational expression:

(3x^3+4x)/(x^2+1)^2

I know that you will have: A/? + B/? + C/? + D/? , but I don't know where to go from there.

Thanks!

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- Mar 28th 2009, 09:11 AMss103Partial Fraction Decomposition
Find the partial fraction decomposition for the rational expression:

(3x^3+4x)/(x^2+1)^2

I know that you will have: A/? + B/? + C/? + D/? , but I don't know where to go from there.

Thanks! - Mar 28th 2009, 09:16 AMJester
- Mar 28th 2009, 09:18 AMrunning-gag
Hi

The form of the decomposition is $\displaystyle \frac{Ax+B}{x^2+1} + \frac{Cx+D}{(x^2+1)^2}$

EDIT : too late ! - Mar 28th 2009, 09:23 AMss103
Okay so my answer is (3x/x^2+1) + (x/(x^2+1)^2).

Is that right? - Mar 28th 2009, 09:39 AMJester