4-45. 5(x/2-3) dx is 1. 215 ( x/2-3) In 5 + C 2. 3x - 15 + C 2 3. 5 (x/2-3)2 In 5 C 4. *x - 3 In 5 + C 4-46. sin dx is 1. - C 2. -2 sin + C 3. -2 cos C 4. 2 tan + C 4-47. * com 2x/ dx is 1. -pin 2x3 + C (x x] .E 2. sin 2x- + CE) . 3 . con {x] + C 4. 4 sin 4x + c :) dx is 4-48. (cos 2x - sin 1. gin 2x + cos 2. 6 cos 2x sin C+ C X + C 3. sin 2x + 3 cos 4. 2 min 2x + C