Consider the system of differential equations

$$\begin{array}{rcr} y_1^{\,\prime} & = & -16 y_1 + 8 y_2, \\ y_2^{\,\prime} & = & -20 y_1 + 8 y_2. \end{array}$$

1. Rewrite this system as a matrix equation $\boldsymbol{\vec{y}^{\,\prime}} = A \boldsymbol{\vec{y}}$.

   $\boldsymbol{\vec{y}^{\,\prime}} =$

   $\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\end{array}}\right[$ $\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\end{array}}\right]$

   $\boldsymbol{\vec{y}}$

   
   
   
2. Compute the eigenvalues of the coefficient matrix $A$ and enter them as a comma separated list.