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If C is a circle of radius r with centre z0...

This question belongs to Engineering Maths Complex Variable
Complex Variable
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If C is a circle of radius r with centre z0, in the complex z-plane and if n is a non-zero integer, then $$\oint {\frac{{{\text{dz}}}}{{{{\left( {{\text{z}} - {{\text{z}}_0}} \right)}^{{\text{n}} + 1}}}}} $$   equals

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Correct Answer: Option B
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