Let the process, G(s), and the controller, H(s), be as in the figure below. Use Matlab to compute the closed-loop transfer function and plot the step and impulse response. Include your Matlab commands.
Ea(s) = 1
R(s)
G(s) = Y(s) = 500s^2 / (s + 1)
H(s) = (s + 2)