Question: A unity feedback system has a loop transfer function where K = 20. Find the roots of the closed-loop systems characteristic equation. L(S) K (s

A unity feedback system has a loop transfer function L(S) K (s + 1)(s + 3) (s + 6)' where K = 20. Find the roots of the closed-loop system’s characteristic equation.

L(S) K (s + 1)(s + 3) (s + 6)'

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