Chapter 6.5, Problem 14P

In each of problem $1$ through $14$, find a fundamental matrix for the given system of equations. In each case, also find the fundamental matrix $e^{\text{At}}$.

$\text{x'}=\left(\begin{array}{ccc}1& -1& 4\\ 3& 2& -1\\ 2& 1& -1\end{array}\right)\text{x}$