Consider the following complex function $${\text{f}}\left( {\text{z}} \right) = \frac{9}{{\left( {{\text{z}} - 1} \right){{\left( {{\text{z}} + 2} \right)}^2}}}$$
Which of the following is one of the residues of the above function?

Consider the following complex function $${\text{f}}\left( {\text{z}} \right) = \frac{9}{{\left( {{\text{z}} - 1} \right){{\left( {{\text{z}} + 2} \right)}^2}}}$$
Which of the following is one of the residues of the above function? Correct Answer -1

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