# Partial fractions

1. Oct 11, 2009

### nameVoid

$$\int \frac{x^2+3x+1}{x^4+5x^2+4}$$
$$(Ax+B)(x^2+1)+(Cx+D)(x^2+4)$$
letting x=0 ..B+4D=1 not sure of the next move
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Oct 11, 2009

### tiny-tim

Hi nameVoid!
That's fine.

Now equate the coefficients of x, and then the coefficients of x2, and then the coefficients of x3.