Question
Find the residues of the following functions at the indicated points. Try to select the easiest of the methods outlined above. Check your results by computer.$$\frac{z}{\left(z^{2}+1\right)^{2}} \text { at } z=i$$
Step 1
We get $\frac{i}{(i^2+1)^2} = \frac{i}{(-1+1)^2} = \frac{i}{0}$. Show more…
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