Textbook

# Elementary Differential Equations and Boundary Value Problems, 9th Edition

October 2008, ©2009

The new 9th edition of Elementary Differential Equations and Boundary Value Problems, like its predecessors, is written from the viewpoint of the applied mathematician, whose interest in differential equations may sometimes be quite theoretical, sometimes intensely practical, and often somewhere in between.  The authors have sought to combine a sound and accurate (but not abstract) exposition of the elementary theory of differential equations with considerable material on methods of solution, analysis, and approximation that have proved useful in a wide variety of applications.  The 9th edition includes new problems and examples, as well as expanded explanations to help motivate students.

The book is written primarily for undergraduate students of mathematics, science, or engineering, who typically take a course on differential equations during their first or second year of study. The main prerequisite for reading the book is a working knowledge of calculus, gained from a normal two- or three-semester course sequence or its equivalent.  Some familiarity with matrices will also be helpful in the chapters on systems of differential equations.

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Table of Contents
Preface
Chapter 1 Introduction 1
1.1  Some Basic Mathematical Models; Direction Fields
1.2  Solutions of Some Differential Equations
1.3  Classification of Differential Equations
1.4  Historical Remarks

Chapter 2 First Order Differential Equations
2.1  Linear Equations; Method of Integrating Factors
2.2 Separable Equations
2.3 Modeling with First Order Equations
2.4 Differences Between Linear and Nonlinear Equations
2.5 Autonomous Equations and Population Dynamics
2.6 Exact Equations and Integrating Factors
2.7 Numerical Approximations: Euler's Method
2.8 The Existence and Uniqueness Theorem
2.9 First Order Difference Equations

Chapter 3 Second Order Linear Equations 135
3.1 Homogeneous Equations with Constant Coefficients
3.2 Fundamental Solutions of Linear Homogeneous Equations; The Wronskian
3.3 Complex Roots of the Characteristic Equation
3.4 Repeated Roots; Reduction of Order
3.5 Nonhomogeneous Equations; Method of Undetermined Coefficients
3.6 Variation of Parameters
3.7 Mechanical and Electrical Vibrations
3.8 Forced Vibrations

Chapter 4 Higher Order Linear Equations
4.1 General Theory of nth Order Linear Equations
4.2 Homogeneous Equations with Constant Coefficients
4.3 The Method of Undetermined Coefficients
4.4 The Method of Variation of Parameters

Chapter 5 Series Solutions of Second Order Linear Equations
5.1 Review of Power Series
5.2 Series Solutions Near an Ordinary Point, Part I
5.3 Series Solutions Near an Ordinary Point, Part II
5.4 Euler Equations; Regular Singular Points
5.5 Series Solutions Near a Regular Singular Point, Part I
5.6 Series Solutions Near a Regular Singular Point, Part II
5.7  Bessel's Equation

Chapter 6 The Laplace Transform
6.1 Definition of the Laplace Transform
6.2 Solution of Initial Value Problems
6.3 Step Functions
6.4 Differential Equations with Discontinuous Forcing Functions
6.5 Impulse Functions
6.6 The Convolution Integral

Chapter 7 Systems of First Order Linear Equations
7.1 Introduction
7.2 Review of Matrices
7.3 Systems of Linear Algebraic Equations; Linear Independence, Eigenvalues, Eigenvectors
7.4 Basic Theory of Systems of First Order Linear Equations
7.5 Homogeneous Linear Systems with Constant Coefficients?
7.6 Complex Eigenvalues
7.7 Fundamental Matrices
7.8 Repeated Eigenvalues
7.9 Nonhomogeneous Linear Systems

Chapter 8 Numerical Methods
8.1 The Euler or Tangent Line Method
8.2 Improvements on the Euler Method
8.3 The Runge-Kutta Method
8.4 Multistep Methods
8.5 More on Errors; Stability
8.6 Systems of First Order Equations

Chapter 9 Nonlinear Differential Equations and Stability
9.1 The Phase Plane: Linear Systems
9.2 Autonomous Systems and Stability
9.3 Locally Linear Systems
9.4 Competing Species
9.5 Predator-Prey Equations
9.6 Liapunov's Second Method
9.7 Periodic Solutions and Limit Cycles
9.8 Chaos and Strange Attractors: The Lorenz Equations

Chapter10 Partial Differential Equations and Fourier Series
10.1 Two-Point Boundary Value Problems
10.2 Fourier Series
10.3 The Fourier Convergence Theorem
10.4 Even and Odd Functions
10.5 Separation of Variables; Heat Conduction in a Rod
10.6 Other Heat Conduction Problems
10.7 The Wave Equation: Vibrations of an Elastic String
10.8 Laplace's Equation
Appendix A Derivation of the Heat Conduction Equation
Appendix B Derivation of the Wave Equation

Chapter 11 Boundary Value Problems and Sturm-Liouville Theory
11.1 The Occurrence of Two-Point Boundary Value Problems
11.2 Sturm-Liouville Boundary Value Problems
11.3 Nonhomogeneous Boundary Value Problems
11.4 Singular Sturm-Liouville Problems
11.5 Further Remarks on the Method of Separation of Variables: A Bessel Series Expansion
11.6 Series of Orthogonal Functions: Mean Convergence
Answers to Problems
Index

New To This Edition
• Additional examples have been added and some existing examples expanded
• New end of chapter problems for added practice
• Expanded sections for clarity and motivation (Chapters 2, 3, 5)
• Discussion of linear dependence and independence moved from Chapter 3 to Chapter 4
• More explanation of integrals of piecewise continuous functions and how Laplace transforms are used to solve initial value problems (Chapter 6)
• Abel's formula explicitly stated, with itemized summary (Chapter 7)
• New subsection on the importance of critical points (Chapter 9)
• More emphasis on the Jacobian matrix
Hallmark Features
• A Flexible approach to content. Self-contained chapters allow instructors to customize the selection, order, and depth of chapters.
• A Flexible approach to technology. Boyce/DiPrima is adaptable to courses having various levels of computer involvement, ranging from little or none to intensive.  More than 450 problems are marked with a technology icon to indicate those that are considered to be technology intensive.
• Sound and accurate exposition of theory. Special attention is made to methods of solution, analysis, and approximation.
• Outstanding exercise sets.  Boyce/DiPrima remains unrivaled in quantity, variety, and range providing great flexibility in homework assignments.
• Applied Problems. Many problems ask the student not only to solve a differential equation but also to draw conclusions from the solution, reflecting the usual situation in scientific or engineering applications.
• Historical footnotes.  The footnotes allow the student to trace the development of the discipline and identify outstanding individual contributions.

## Available Versions

Elementary Differential Equations and Boundary Value Problems, 9th Edition
by William E. Boyce, Richard C. DiPrima
ISBN 978-0-470-38334-6
October 2008, ©2009
Hardcover, 816 pages
US \$241.95 Add to Cart
Elementary Differential Equations and Boundary Value Problems, Ninth Edition Binder Ready Version
by William E. Boyce
ISBN 978-0-470-40405-8
October 2008, ©2009
Paperback, 816 pages
US \$156.95 Add to Cart
Elementary Differential Equations and Boundary Value Problems, Textbook and Student Solutions Manual Set, 9th Edition
by William E. Boyce, Richard C. DiPrima
ISBN 978-0-470-49881-1
February 2009, ©2009
Hardcover
US \$294.95 Add to Cart
E-book
Elementary Differential Equations and Boundary Value Problems, 9th Edition
by William E. Boyce, Richard C. DiPrima
ISBN 978-0-470-45712-2
December 2008, ©2009
Wiley E-Text