(4) Choose correct answer: i) So Sosing" (cosa) dy dx = a. 5* 1-1 . 2 1+12 6.2 22 b 1-1 -2 c. 1: 1+7 d. -2 5 mark 2 ii) area bounded by x = 0, y = 0, x = 3, y = 3, and x + y = 4 equal to 2570 a. 22 4977 b. 22 361 C. 22 d. 10 5 mark 3 cos2e iii) modulus of complex z = 2+ - (cose)2 + i equal to ( 2 a. 3 b.3 c. 12 d. 2 5 mark iv) if z = (xy)-1 then 2x 2y = a. x - y b.x + y c.z?(x - y) d.z-(x + y) 5 mark