Question: E9.6 A system has a loop transfer function L(s) = Ge(s)G(s) = K(s + 50) s(s +20) (s +15) When K 699.9, the closed-loop system

E9.6 A system has a loop transfer function

L(s) = Ge(s)G(s) = K(s + 50) s(s +20) (s +15) When

L(s) = Ge(s)G(s) = K(s + 50) s(s +20) (s +15) When K 699.9, the closed-loop system is unstable. Find the gain margin and phase margin of the system with K = 50.

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