Question:medium

For the given open-loop system, \[ G(s)=\frac{1}{(s+2)(s+4)}, \] the poles of the unity feedback closed-loop system are:

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For unity feedback configurations with \(G(s) = \frac{1}{s^2 + bs + c}\), the closed-loop characteristic equation simplifies instantly to \(s^2 + bs + (c+1) = 0\). Here, \(s^2 + 6s + 8 \rightarrow s^2 + 6s + 9 = 0\), which yields the real double root \(-3, -3\).

Updated On: Jun 25, 2026

\(-3, 3\)
\(-1, -3\)
\(-3, -3\)
\(1, 3\)

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The Correct Option is C

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