Determine to unit-ramp response of the system defined by

\[\begin{aligned}\dot{x}_{1} & =\begin{array}{rrr}0 & 2 \\-3 & -3 & x_{1} \\\dot{x}_{2}\end{array}+{ }_{2}^{0} \\y & =\left[\begin{array}{ll}1 & 0\end{array}\right] \begin{array}{l}x_{1} \\x_{2}\end{array}\end{aligned}\]

Using MATLAB where $u$ is the unit-ramp input. Use lsim command in MATLAB.