4. A spring is such that a 32-lb weight stretches it 6 inches. The weight is pulled down to a point 4 in below the equilibrium point and given an initial downward velocity 24 ft/sec. An impressed force of 360 sin27 is applied. Describe the motion and find the position at t=sec (5 points). 5. (bonus) Find the particular solution indicated (D2-2D-3)y=4xex, when x=0, y=2, y'=1