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1. |
In the Laurent expansion of \(f\left( z \right) = \frac{1}{{\left( {z - 1} \right)\left( {z - 2} \right)}}\) valid in the region 1 < |z| < 2, the co-efficient of \(\frac{1}{{{z^2}}}\) is |
A. | 0 |
B. | 1/2 |
C. | 1 |
D. | -1 |
Answer» E. | |