a. Plot the response \(x\) by using the step and initial commands, showing the step response, the initial response and the total response in one figure. Verify the steady-state value of \(x\).
b. Plot the response \(x\) by using the lsim command.

\(u(t)\) denotes the unit step.

\(\frac{1}{4} \ddot{x}+\dot{x}+\frac{5}{4} x=2 u(t), x(0)=0, \dot{x}(0)=\frac{1}{2}\)