# Thread: Need help finding residues

1. ## Need help finding residues

I'm trying to find the residues of

$f(z)=\frac{z+1}{z(z-2)}$ at 0 and 2.

Can anyone give me a starting place to solve this?

2. If $z_{0}$ is a first order pole of $f(z)$ then the residue in $z_{0}$ is...

$\lim _{z \rightarrow z_{0}} f(z)\cdot (z-z_{0})$ (1)

Kind regards

$\chi$ $\sigma$