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The value of oint limits text C frac text dz left(...

This question belongs to Engineering Maths Complex Variable
Complex Variable
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The value of $$\oint\limits_{\text{C}} {\frac{{{\text{dz}}}}{{\left( {1 + {{\text{z}}^2}} \right)}}} $$   where C is the contour |z - i/2| = 1 is

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Correct Answer: Option B
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