engineering recuitment GATE ME 2023-24 Test Series Engineering Mathematics Complex Variables Cauchy's Integral Theorem
Let \(f(z) = \frac{1}{z^2 + 6z + 9}\) defined in the complex plane. The integral ∮c f(z)dz over the contour of a circle c with center at the origin and unit radius is ___.
Enter numerical value using the virtual keypad. Round off where necessary.