Chapter 6.4, Problem 18P

For each of the matrices in problem $15$ through $18$ use a computer to assist in finding a fundamental set of real solutions to the system $\text{x'=Ax}$.

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