Chapter 3.4, Problem 6P

General Solutions of Systems. In each of Problems $1$ through $6$, find the generalsolution of the given system of equations in terms of real – valued functions. Also draw a direction field and phase portrait. Describe the behaviour of the solutions as $t\to \infty$.

$\text{x}\text{'}=\left(\begin{array}{cc}1& 2\\ -5& -1\end{array}\right)\text{x}$