Please answer #4 with Matlab code

3. This and some of the following problems concern models for the motion of a pen- dulum, which consists of a weight attached to a rigid arm of length L that is free to pivot in a complete circle. Neglecting friction and air resistance, the angle 0(t) that the arm makes with the vertical direction satisfies the differential equation e")+ Z sin (0l0)- (D.2) where g 32.2 ft/sec2 is the gravitational acceleration constant. We will assume the arm has length 32.2 ft and so replace (D.2) by the simpler form ', + sin -0. (D.3)