Question 5 (20 marks) a. Let F(x, y) = (2x +xy )it (x y+1)j. Evaluate the line integral | F . dr , where I consists of two straight lines. The first line is from (0,2) to (1,0) and the second is from (1,0) to (2,2). (0,2) (2,2) 1.5 7 1 - 0.5 4 (1,0) 0.5 1.5 2 X (10 marks)