For the unity feedback system of Figure P8.3, where Gs Ks 5 s2 1s 1s 3 sketch the root locus and find the range of K such that there will be only two righthalf-plane poles for the closed-loop system. [Section: 8.5]
10/19/2017 OneNote Online Abstract Classes and Interfaces Wednesday, September 271:44 PM The public interface of a class is a promise to the users of the class. • Guarantee that certain methods will be available and that they have specific prototypes • Guarantee that certain instance variables can be accessed (though we should generally not be using public instance variables) These promises extend into the class hierarchy • The superclass makes certain promises about available methods and instance variables • These promises must be kept by all child classes ○ But: the implementation of these promises can be overridden ABST
