In Section 11.3, we derived a number of properties that can be of value in deter-mining...

In Section 11.3, we derived a number of properties that can be of value in deter-mining the root locus for a feedback system. In this problem, we develop several additional properties. We derive these properties in terms of continuous-time systems, but, as with all root-locus properties, they hold as well for discrete-time root loci. For our discussion of these properties, we refer to the basic equation satisfied by the closed-loop poles, namely,

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