Question: A circuit is characterized by the following transfer function: G ( s ) = K s 2 + s ( 3 - K ) +

A circuit is characterized by the following transfer function:
G(s)=Ks2+s(3-K)+1
a) Show that the circuit is stable for K3.
b) Explain how the circuit becomes marginally stable for K=3 and discuss the values of K for which the circuit becomes unstable.
A circuit is characterized by the following

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