GATE XE (Engineering Sciences) 2007 - Question 15

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Section: Engineering Mathematics | Marks: 2

The value of the contour integral $\oint_{|z|=1} \frac{\cosh z}{4z^2 + 1} dz$ is equal to

  • A. $2\pi \cosh(i/2)$
  • B. $\pi \cosh(i/2)$
  • C. 0
  • D. $2\pi i$

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