The matrices in the state-space form of a system model are given.

a. Find the transfer function (or transfer matrix) by using Equation 4.21.

b. Verify the result of (a) by using the ss2tf command.

\(\mathbf{A}=\left[\begin{array}{ccc}0 & 1 & 0 \\ 0 & 0 & 1 \\ -2 & -1 & -2\end{array}\right], \mathbf{B}=\left[\begin{array}{ll}0 & 0 \\ 1 & 0 \\ 0 & \frac{1}{4}\end{array}\right], \mathbf{C}=\left[\begin{array}{lll}0 & 1 & 0 \\ 0 & 0 & 1\end{array}\right], \mathbf{D}=\left[\begin{array}{ll}\frac{1}{2} & 0 \\ 0 & 0\end{array}\right]\)