Evaluate following contour integrals. (a) fr. dz, where I is the circle |=|= 2 traversed once...

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Evaluate following contour integrals. (a) fr. dz, where I is the circle |=|= 2 traversed once counterclockwise. (b) fr Re(2)dz, where I is the directed line segment from = 0 to z=1+2i. (c) fredz, where I is the upper half of the circle |=|= 1 from = 1 to=-1. (d) = (2x+1)dz. (e) frdz, where I is the ellipse defined by r + 3y = 1, traversed once in the positive sense. Evaluate following contour integrals. (a) fr. dz, where I is the circle |=|= 2 traversed once counterclockwise. (b) fr Re(2)dz, where I is the directed line segment from = 0 to z=1+2i. (c) fredz, where I is the upper half of the circle |=|= 1 from = 1 to=-1. (d) = (2x+1)dz. (e) frdz, where I is the ellipse defined by r + 3y = 1, traversed once in the positive sense.