9. Let $A = \begin{pmatrix} 3 & 3 \\ 6 & 4 \end{pmatrix}$. Sketch the solutions curves for \\
$\begin{pmatrix} x \\ y \end{pmatrix}' = A \begin{pmatrix} x \\ y \end{pmatrix}$ \\
with initial values $(-1, 0), (1, 1), (1, 0)$. Your sketch should show the asymptotic behavior of the solutions \\
when $t \to +\infty$ and $t \to -\infty$. On the trajectory, indicate the direction for $t \to +\infty$ with an arrow. Also \\
compute \\
e$^{tA}$, A$^{20}$
