y is the segment joining the points z=0 & z= 2i reunited with the segment joining the points z = 2i & z = 4 + 2i: Resolve Curve y = OA UAB; where A(z = 2i) = A(0; 2) and B (z = 4 + 2i) = B (4,2) OA { X (t) = 0 Ly (t) = t : te [0, 2], & AB : x (t) = t y (t) = 2 : te [0, 4)