EC > GATE 2017 SET-2 > Complex Integration

Contributed by: Dr. Sarah Chen

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An integral I over a counterclockwise circle C is given by
I=∮_C(z²-1)/(z²+1)e^zdz.
If C is defined as |z|=3, then the value of I is

A

-πi sin(1)

B

-2πi sin(1)

C

-3πi sin(1)

D

-4πi sin(1)

Check Answer

Explanation

Correct : d

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