A unity feedback system has an open-loop transfer function \(G\left( s \right) = \frac{{K\left( {s + 4} \right)}}{{\left( {s + 1} \right)\left( {s + 2} \right)}}\)The portions of the real axis that lie on the root loci are between

s = 0 and s = -2, beyond s = -4

s = -2 and s = -4; s = -1 and +∞

s = -1 and s = -2; s = -4 and -∞

A unity feedback system has an open-loop transfer function \(G\left( s

1.	A unity feedback system has an open-loop transfer function \(G\left( s \right) = \frac{{K\left( {s + 4} \right)}}{{\left( {s + 1} \right)\left( {s + 2} \right)}}\)The portions of the real axis that lie on the root loci are between
A.	s = -2 and s = -4; s = -1 and +∞
B.	s = -1 and s = -2; s = -4 and -∞
C.	s = 0 and s = -2, beyond s = -4
D.	s = 0 and s = -1
Answer» C. s = 0 and s = -2, beyond s = -4

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A unity feedback system has an open-loop transfer function \(G\left( s \right) = \frac{{K\left( {s + 4} \right)}}{{\left( {s + 1} \right)\left( {s + 2} \right)}}\)The portions of the real axis that lie on the root loci are between

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