a) Calculate xdz Along the line segment passing through the points o and 1 + i. Suggestion 1: Consider that z = x + yi. Suggestion 2: Find the equation of the line through o and 1 + i, which will serve to establish the equation of the curve on which has to be integrated. b) Calculate dz Along the positive direction of the curve Iz| = 2. Suggestion: the curve Iz| = 2. is the circle with center at coordinate origin and radius 2 units