Using matlab Evaluate the stability of the system based on the statespace model given by

$x^{}=Ax+Bu$

where,

$A=\left[\begin{array}{cccc}0& 1& 0& 0\\ 0& -0\mathrm{.}2& -2& 0\\ 0& 0& 0& 1\\ 0& -0\mathrm{.}1& 6& 0\end{array}\right],$;$B=\left[\begin{array}{c}0\\ 0\mathrm{.}2\\ 0\\ 0\mathrm{.}1\end{array}\right]$

Note: provide the matlab working