Question: Determine whether the systems with the following characteristic equations are stable or unstable: (a) s 3 + 3s 2 + 5s + 75 = 0

Determine whether the systems with the following characteristic equations are stable or unstable:

(a) s3 + 3s2 + 5s + 75 = 0
(b) s4 + 5s3 + 10s2 + 10s + 80 = 0
(c) s2 + 6s + 3 = 0

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