Question: ( 1 5 points ) The open loop TF of the unit negative feedback control system is , G ( s ) = K s

(15 points) The open loop TF of the unit negative feedback control system is,
G(s)=Ks(s+1)(s+3)
Pls. evaluate the value range of K when the closed-loop system is stable.
( 1 5 points ) The open loop TF of the unit

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