Question: Use the result in Exercise 7 to find the residue at z = 0 of the function (a) f(z) = csc2z; (b) f(z) = 1/(z

Use the result in Exercise 7 to find the residue at z = 0 of the function
(a) f(z) = csc2z;
(b) f(z) = 1/(z + z2)2

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