Draw a Nyquist plot for a system with open loop transmittance [ mathrm{G}(s) mathrm{H}(s)=frac{s^{2}+4 s+6}{s^{2}+5 s+4} ]

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Draw a Nyquist plot for a system with open loop transmittance

\[
\mathrm{G}(s) \mathrm{H}(s)=\frac{s^{2}+4 s+6}{s^{2}+5 s+4}
\]

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