ABSTRACT
In most optimization problems, the object function f will usually depend on several variables, , , , ,1 2 3x x x xn… . ese are called the control variables because their values can be selected. Optimization theory develops methods for selecting optimal values for the control variables , , , ,1 2 3x x x xn… that either maximize or minimize the objective function f. In many cases, the choice of values for , , , ,1 2 3x x x xn… is not entirely free but is subject to some constraints.
