7. Find 8. Find So sinh 22 z3 sin z z2 -dz, where C is the circle || = 1. dz, along the following contours: - (a) the circle z − (π/2)| = 1. (b) the circle | z − (π/4)| = 1. 9. Find 10. Find So - dz, where C is the circle || = 1 and n is a positive integer. ez 22(2216) - dz along the following contours: (a) the circle || = 1. (b) the circle |z4| = 1. 11. Find 1 dz, where C is the circle |z-i- 1| = 1. z4 +4

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