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3. (25 points) Obtain the following for the unit feedback system below. a. The range of K for closed-loop stability b. The value of K at which the system will start oscillating c. The frequency of oscillation in part b. K (s — 1)(s — 2) G(s) = (s + 2)(s2 + 2s + 2) R(s) +E(s) _….T .1.- G(s) C(s)
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