In locus of amplification factor , what does the 'locus' represent?

[smithybrick]

In "locus of amplification factor", what does the 'locus' represent?

I am taking an applied class on complex variables and studying fractional linear transformations. I am given the amplificaton factor for a given circuit and asked to draw the "locus of the amplification factor." I can do this but my question is what exactly does this "locus" (which is a circle) represent? Thanks
-brick

 

[abdo375]

A locus is the movement of the poles of the transfer function as the gain (amplification factor) varies form zero to infinity, this can be used to test the stability of the system with different vales of gain, or it can be used to adjust the system for certain parameters (faster transit response or less steady state error).

 

[ravenprp]

The term "locus" in this context refers to the set of all points that satisfy a given condition or equation. In the case of the "locus of amplification factor", it represents all the possible values of the amplification factor for a given circuit. Drawing this locus as a circle helps to visualize and understand the range of possible values for the amplification factor. It is a useful tool for analyzing and designing circuits, as it allows us to see how changes in the circuit parameters can affect the amplification factor.