Complex Variables and Partial Differential Equations (3130005)

Q3 (b) Summer-2020  

For, $\mathrm{f}\left(\mathrm{z}\right) = \frac{1}{ {\left(\mathrm{z}-1\right)}^2\left(\mathrm{z}-3\right) }$, find the residue at $\mathrm{z} = 1$.