Chapter 7.3, Problem 12P

a)

Summary Introduction

To identify: If the changes in optimal solution are in the direction as expected.

Non-linear programming (NLP):

Non-linear programming (NLP) is used in complex optimization problems where the objectives or constraints or sometimes both are non-linear functions of the decision variables. A model can be termed as non-linear for more than one reason.

b)

Summary Introduction

To identify: If the changes in optimal solution are in the direction as expected for different magnitudes.

c)

Summary Introduction

To make: The changes simultaneously and return the results.