Rewrite the second order differential equation

$u^{\text{'}\text{'}}+2u^{\text{'}}+4u=0$

as an equivalent system of first order differential equations. In your answers use the single letter $u$ to represent the function $u$ and the single letter $v$ to represent the "velocity function" $u^{\text{'}}.$ Do not use $u(t)$ or $v(t).$ This problem only asks you to rewrite the differential equation; do not solve it$.$

$u^{\text{'}}=$

$$

$v^{\text{'}}=$

$$

Now rewrite the first order system using matrices:

$\frac{d}{dt}\left[\begin{array}{c}u\\ v\end{array}\right]=[]$