Take the system \ddot{x} = \begin{bmatrix} -4 & 2\\ 1 & -1 \end{bmatrix} \vec{x} Find the natural frequencies of the system (you might want to use a calculator here) $\omega_1 = \sqrt{(-(-5) + \sqrt{17})/2}$ $\omega_2 = \sqrt{((5) + (-\sqrt{17}))/2}$
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