Consider the points (s_{1}=-3+j 4) and (s_{2}=-3-j 2) in the (s)-plane. Then, for a system with the
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Consider the points \(s_{1}=-3+j 4\) and \(s_{2}=-3-j 2\) in the \(s\)-plane. Then, for a system with the open-loop transfer function:
\[
\mathrm{G}(s) \mathrm{H}(s)=\frac{\mathrm{K}}{(s+1)^{4}}
\]
(a) \(s_{1}\) is on the root locus, but not \(s_{2}\)
(b) \(s_{2}\) is on the root locus, but not \(s_{1}\)
(c) both \(s_{1}\) and \(s_{2}\) are on the root locus
(d) neither \(s_{1}\) nor \(s_{2}\) is on the root locus.
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