Root locus analysis is a graphical method used in control system engineering to study how the roots of a system's characteristic equation (the system poles) change in response to a variation in a particular parameter, typically a gain (denoted as \( K \)). This technique is particularly useful for analyzing and designing feedback control systems. ### Key Concepts: 1. **Characteristic Equation**: In the context of control systems, the characteristic equation is derived from the system's transfer function.
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