This text emphasizes the general area of nonlinear engineering models with an in-depth discussion of computer algorithms for solving nonlinear problems coupled with appropriate examples of such nonlinear engineering problems. The present book is a balance of numerical theory applied to nonlinear or linear engineering models with many examples taken for typical engineering type problems. This book is for the engineer who wants to learn the basics of the theory but who wishes to rapidly get to solving real nonlinear engineering type problems with modern desktop computers.