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The value of the contour integral oint limits left text z...

This question belongs to Engineering Maths Complex Variable
Complex Variable
?

The value of the contour integral $$\oint\limits_{\left| {{\text{z}} - {\text{i}}} \right| = 2} {\frac{1}{{{{\text{z}}^2} + 4}}{\text{dz}}} $$    in positive sense is

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Correct Answer: Option D
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