10. Evaluate the following contour integrals I1, I2 on two different contours each: C₁, the unit circle |z| = 1, and C2, the circle defined by |z-i + 4 = 10. In each case, draw the contours and mark the singularities of the integrand. I₁ = $ dz sin 22 (62 π)3; I₂ = - $o 30 (1+z)(2-2)(3+z) dz- (**)

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