Question: The open-loop transfer function of a control system with a negative unity feedback is as follows: For what value of (k), does the closed-loop system

 The open-loop transfer function of a control system with a negative unity feedback is as follows:

G(s) = k (s 1)(s+3)(s+5)

For what value of \(k\), does the closed-loop system response oscillate?

1) -15 

2) 15 

3) 34 

4) 64

G(s) = k (s 1)(s+3)(s+5)

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