1. The 1st order system on the right is defined as follows: Input System Output 60 20s +1 H(s) Write Matlab Program to produce step response without using the step function. Show the responses and the pole location when you change the gain to 70, 80, 90 and 100. Show the responses and the pole location when you change the time constant to 25, 30, 40 and 50. a. b. c. d. If in the above system the signal, x(t), is oscillatory and defined as: x() (10.2 cos( 0.5t)i(t) Write Matlab Program to produce step response using the the step function