Root locus method is used to determine open loop system
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⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐ ✔✔This is a technique used as a stability CRITERION in the field of classical CONTROL theory developed by ✔✔Walter R. Evans✔✔✔ which can DETERMINE stability of the system.
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✔✔The root locus plots the poles of the closed loop transfer FUNCTION in the complex s-plane as a function of a GAIN parameter ✔(see pole–zero plot).✔ ☺☺☺☺☺☺☺☺☺☺☺☺☺