Consider a continuous-time feedback system whose closed-loop poles satisfy Use...

Consider a continuous-time feedback system whose closed-loop poles satisfy

Use the Nyquist plot and the Nyquist stability criterion to determine the range of values of K for which the closed-loop system is stable. Hint: In sketching the Nyquist plot, you may find it useful to sketch the corresponding Bode plot first. It also is helpful to determine the values of w for which G(jω)H(jω) is real.