Chapter 6.3, Problem 21P

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 $\text{x}\text{'}=\text{Ax}$.

$\text{A=}\left(\begin{array}{cccc}-2& 2& 0& -2\\ -1& 3& -1& 1\\ -2& -2& -4& 2\\ -7& 1& -7& 3\end{array}\right)$