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To understand the concepts of constrained and un-constrained, To extend the concept of maxima and minima for multivariables, 6.1, Chapter Objectives, To extend the concept of maxima and minima for multivariable, optimization problems, To practice for the solutions of several equations in design variables, 6.2, Pre-requisite, The pre-requisites of this chapter include a good hand at partial, differentiation of functions of two and more variables. Along with the, basic concepts developed in previous chapter, this also needs the idea, of Taylor's theorem on functions of more variables., A bit of matrix algebra including positive definiteness concepts, play a vital role in deciding a point to be maxima or minima. Eigen, values of a matrix find a comfortable place in the evaluations of extremum, points., Scanned with CamScanner