Question

The residue of the function z^2/(z^2+1) ^2 at the pole z = 1 is​

Answer 1

Answer:

− 2)(z − 3)(z − 4)(z − 5) . This is meromorphic on C with (simple) poles at z = 2,3,4,5. ... pole of order n, a function behaves like 1/(z − z0)n.

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