Chapter 24 provides knowledge of maximization or minimization (otimization) of multi-variable functions or two or more variable. The contents of this chapter include all of the following: Procedure for maximizing (or minimizing) a function of one variable, maximizing or minimizing functions of two variables, maximizing or minimizing functions of N variables, maximizing or minimizing functions of 2 variables subject to a constraint, maximizing or minimizing functions of N variables subject to a constraint.