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The contour integral $$\oint\limits_{\text{C}} {{{\text{e}}^{\frac{1}{{\text{z}}}}}{\text{dz}}} $$   with C as the counter-clockwise unit circle in the z-plane is equal to

The contour integral $$\oint\limits_{\text{C}} {{{\text{e}}^{\frac{1}{{\text{z}}}}}{\text{dz}}} $$   with C as the counter-clockwise unit circle in the z-plane is equal to Correct Answer $$2\pi \sqrt { - 1} $$

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