Chapter 6.3, Problem 18P

For each of the matrices in Problems $18$ through $23$, use a computer to assist in finding a fundamental set of solutions to the system $\text{x}\text{'}=\text{Ax}$.

$\text{A=}\left(\begin{array}{cccc}5& 1& -4& -1\\ 0& -3& 0& 0\\ 1& -1& 0& 1\\ 2& -1& 2& -2\end{array}\right)$