Q88
In the Laurent expansion of f ( z ) = 1 ( z - 1 ) ( z - 2 ) valid in the region 1 < | z | < 2, the coefficient of 1 z^2 is
In the Laurent expansion of valid in the region 1 < | z | < 2, the coefficient of is
A.
0
B.
C.
1
D.
-1
AnswerAnswer: Option D
Solution
Answer: Option D
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