Singularities lies outside the contour

Reference no: EM13831441

Evaluate integral of [z/(z^2 + 2z + 5)] dz , c = unit circle ,Z here is a complex number

isn't the integral value be zero because z = -1+2i & z = -1-2i both singularities lies outside the contour ?

Reference no: EM13831441

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Singularities lies outside the contour : Evaluate integral of [z/(z^2 + 2z + 5)] dz , c = unit circle ,Z here is a complex number isn't the integral value be zero because z = -1+2i & z = -1-2i both singularities lies outside the contour ?

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