## Differential Equations: A Systems Approach, 1/e

Jack L. Goldberg, University of Michigan
Merle C. Potter, Michigan State University

Published July, 1997 by Prentice Hall Engineering/Science/Mathematics

Cloth
ISBN 0-13-211319-8

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Differential Equations-Mathematics

Engineers and scientists study differential equations because of its crucial role in the analysis of physical and biological systems. This short text addresses this need by presenting the classical theory from a systems point of view. Besides making system theory the unifying pedagogical take, this text offers an abundance of applications, examples, and problems. For the instructors interested in combining computer solutions to differential equations, there are many problems which ask students to use MATLAB.

This text covers linear algebra early because this is a tool used extensively throughout—more than other texts.
There is a greater emphasis on engineering applications.
Combines classical techniques with extensive computer problems and applications.

0. Complex Numbers.

Introduction. The Cartesian and Exponential Forms. Roots of Polynomial Equations and Numbers. Matrix Notation and Terminology. The Solution of Simultaneous Equations. The Algebra of Matrices. Matrix Multiplication. The Inverse of a Matrix. The Computation of Agif/super_k.gif-1. Determinants. Linear Independence.

1. First-Order Differential Equations.

Preliminaries. Definitions. The First-Order Linear Equation. Applications of First-Order Linear Equations. Nonlinear Equations of First Order.

2. Linear Systems.

Introduction. Eigenvalues and Eigenvectors. First-Order Systems. Solution and Fundamental Solution Matrices. Some Fundamental Theorems. Solutions of Nonhomogeneous Systems. Nonhomogeneous Initial-Value Problems. Fundamental Solution Matrices.

3. Second-Order Linear Equations.

Introduction. Sectionally Continuous Functions. Linear Differential Operators. Linear Independence and the Wronskian. The Nonhomogeneous Equation. Constant Coefficient Equations. Spring-Mass Systems in Free Motion. The Electric Circuit. Undetermined Coefficients. The Spring-Mass System: Forced Motion. The Cauchy-Euler Equation. Variation of Parameters.

4. Higher Order Equations.

Introduction. The Homogeneous Equation. The Nonhomogeneous Equation. Companion Systems. Homogeneous Companion Systems. Variation of Parameters.

5. The Laplace Transform.

Introduction. Preliminaries. General Properties of the Laplace Transform. Sectionally Continuous Functions. Laplace Transforms of Periodic Functions. The Inverse Laplace Transform. Partial Fractions. The Convolution Theorem. The Solution of Initial-Value Problems. The Laplace Transform of Systems. Tables of Transforms.

6. Series Methods.

Introduction. Analytic Functions. Taylor Series of Analytic Functions. Power Series Solutions. Legendre's Equations. Three Important Examples. Bessel's Equation. The Wronskian Method. The Frobenius Method.

7. Numerical Methods.

Introduction. Direction Fields. Notational Conventions. The Euler Method. Heun's Method. Taylor Series Methods. Runge-Kutta Methods. Multivariable Methods. Higher Order Equations.

8. Boundary-Value Problems.

Introduction. Separation of Variables. Fourier Series Expansions. The Wave Equation. The One-Dimensional Heat Equation. The Laplace Equation. A Potential about a Spherical Surface.