Consider the following complex function: $f(z)=\frac{9}{(z-1)(z+2)^{2}}$ Which of the following is one of the residues of the above function?
(A) -1
(B) $9 / 16$
(C) 2
(D) 9
Consider the following complex function: $f(z)=\frac{9}{(z-1)(z+2)^{2}}$ Which of the following is one of the residues of the above function?
(A) -1
(B) $9 / 16$
(C) 2
(D) 9