Question: A system has a characteristic equation q(s) = s4 + 9s3 + 45s2 + 87s + 50 = 0. (a) Determine whether the system is

A system has a characteristic equation
q(s) = s4 + 9s3 + 45s2 + 87s + 50 = 0.
(a) Determine whether the system is stable, using the Routh-Hurwitz criterion.
(b) Determine the roots of the characteristic equation.

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