QUESTION 3 Find the general solutions of the following differential equations using D-operator methods: 3.1 (D' - 2D + 2)y = sin2x (9) 3.2 (D' + D - 2) y =5x -3 (8) [17] QUESTION 4 Solve only for x in the following set of simultaneous differential equations by using D-operator methods: + dx dy + 5 x +3y = e-t dt (10) 2 dx + dy + x+y=3 dt dt [10]