Student Solutions Manual for Elementary Differential Equations and Elementary Differential Equations with Boundary Value Problems William F. Trench

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2-2013 Student Solutions Manual for Elementary Differential Equations and Elementary Differential Equations with Boundary Value Problems William F. Trench Trinity University, [email protected] ... Follow this and additional works at: http://scholarcommons.usf.edu/oa_textbooks Part of the Mathematics Commons, and the Ordinary Differential Equations and Applied Dynamics Commons This Book is brought to you for free and open access by the USF Tampa Library Open Access Collections at Scholar Commons. It has been accepted for inclusion in Textbooks Collection by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. Recommended Citation Trench, William F., "Student Solutions Manual for Elementary Differential Equations and Elementary Differential Equations with Boundary Value Problems" (2013). Textbooks Collection. Book 7. http://scholarcommons.usf.edu/oa_textbooks/7STUDENT SOLUTIONS MANUAL FOR ELEMENTARY DIFFERENTIAL EQUATIONS AND ELEMENTARY DIFFERENTIAL EQUATIONS WITH BOUNDARY VALUE PROBLEMS William F. Trench Andrew G. Cowles Distinguished Professor Emeritus Department of Mathematics Trinity University San Antonio, Texas, USA [email protected] This book has been judged to meet the evaluation criteria set by the Editorial Board of the American Institute of Mathematics in connection with the Institute’s Open Textbook Initiative. It may be copied, modified, redistributed, translated, and built upon subject to the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.This book was published previously by Brooks/Cole Thomson Learning Reproduction is permitted for any valid noncommercial educational, mathematical, or scientific purpose. However, charges for profit beyond reasonable printing costs are prohibited.TO BEVERLY Contents Chapter 1 Introduction 1 1.2 First Order Equations 1 Chapter 2 First Order Equations 5 2.1 Linear First Order Equations 5 2.2 Separable Equations 8 2.3 Existence and Uniqueness of Solutions of Nonlinear Equations 11 2.4 Transformation of Nonlinear Equations into Separable Equations 13 2.5 Exact Equations 17 2.6 Integrating Factors 21 Chapter 3 Numerical Methods 25 3.1 Euler’s Method 25 3.2 The Improved Euler Method and Related Methods 29ii Contents 3.3 The Runge-Kutta Method 34 Chapter 4 Applications of First Order Equations 39 4.1 Growth and Decay 39 4.2 Cooling and Mixing 40 4.3 Elementary Mechanics 43 4.4 Autonomous Second Order Equations 45 4.5 Applications to Curves 46 Chapter 5 Linear Second Order Equations 51 5.1 Homogeneous Linear Equations 51 5.2 Constant Coefficient Homogeneous Equations 55 5.3 Nonhomgeneous Linear Equations 58 5.4 The Method of Undetermined Coefficients I 60 5.5 The Method of Undetermined Coefficients II 64 5.6 Reduction of Order 75 5.7 Variation of Parameters 79 Chapter 6 Applcations of Linear Second Order Equations 85 6.1 Spring Problems I 85 6.2 Spring Problems II 87 6.3 The RLC Circuit 89 6.4 Motion Under a Central Force 90 Chapter 7 Series Solutions of Linear Second Order Equations 108 7.1 Review of Power Series 91 7.2 Series Solutions Near an Ordinary Point I 93 7.3 Series Solutions Near an Ordinary Point II 96 7.4 Regular Singular Points; Euler Equations 102 7.5 The Method of Frobenius I 103 7.6 The Method of Frobenius II 108 7.7 The Method of Frobenius III 118 Chapter 8 Laplace Transforms 125 8.1 Introduction to the Laplace Transform 125 8.2 The Inverse Laplace Transform 127 8.3 Solution of Initial Value Problems 134 8.4 The Unit Step Function 140 8.5 Constant Coefficient Equations with Piecewise Continuous Forcing Functions 143 8.6 Convolution 152Contents iii 8.7 Constant Cofficient Equations with Impulses 55 Chapter 9 Linear Higher Order Equations 159 9.1 Introduction to Linear Higher Order Equations 159 9.2 Higher Order Constant Coefficient Homogeneous Equations 171 9.3 Undetermined Coefficients for Higher Order Equations 175 9.4 Variation of Parameters for Higher Order Equations 181 Chapter 10 Linear Systems of Differential Equations 221 10.1 Introduction to Systems of Differential Equations 191 10.2 Linear Systems of Differential Equations 192 10.3 Basic Theory of Homogeneous Linear Systems 193 10.4 Constant Coefficient Homogeneous Systems I 194 10.5 Constant Coefficient Homogeneous Systems II 201 10.6 Constant Coefficient Homogeneous Systems II 245 10.7 Variation of Parameters for Nonhomogeneous Linear Systems 218 Chapter 221 11.1 Eigenvalue Problems for y00 C !y D 0 221 11.2 Fourier Expansions I 223 11.3 Fourier Expansions II 229 Chapter 12 Fourier Solutions of Partial Differential Equations 239 12.1 The Heat Equation 239 12.2 The Wave Equation 247 12.3 Laplace’s Equation in Rectangular Coordinates 260 12.4 Laplace’s Equation in Polar Coordinates 270 Chapter 13 Boundary Value Problems for Second Order Ordinary Differential Equations 273 13.1 Two-Point Boundary Value Problems 273 13.2 Sturm-Liouville Problems 279CHAPTER 1 Introduction 1.2 BASIC CONCEPTS [Show More]

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