An integral I over a counterclockwise circle C is given by
\(I = \mathop \oint \limits_C^\; \frac{{{z^2} - 1}}{{{z^2} + 1}}{e^z}dz.\)
If C is defined as |z| = 3, then the value of I is1
-πi sin (1)
2
-2πi sin (1)
3
-3πi sin (1)
4
-4πi sin (1)
An integral I over a counterclockwise circle C is given by
\(I = \mathop \oint \limits_C^\; \frac{{{z^2} - 1}}{{{z^2} + 1}}{e^z}dz.\)
If C is defined as |z| = 3, then the value of I is