- #1

- 2,169

- 190

## Homework Statement

##∫\frac {dx}{(x^2-1)^2}##

## Homework Equations

## The Attempt at a Solution

I tried to divide ##\frac {1} {(x^2-1)^2}## as ##\frac {Ax+B} {(x^2-1)} +\frac {Cx^3+Dx^2+Ex+F} {(x^2-1)^2}##

but this looks so complex..I don't know how to do ? Maybe I can just left at simpler terms.But how can I decide it ?