Calculus of a Single Variable Ninth Edition Ron Larson The Pennsylvania State University The Behrend College Bruce H. Edwards University of Florida Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States Calculus of a Single Variable, Ninth Edition © 2010, 2006 Brooks/Cole, Cengage Learning Larson/Edwards ALL RIGHTS RESERVED. 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Purchase any of our products at your local college store or at our preferred online store www.ichapters.com Printed in the United States of America 1 2 3 4 5 6 7 12 11 10 09 08 C ontents A Word from the Authors viii Textbook Features xii CHAPTER P Preparation for Calculus 1 P.1 Graphs and Models 2 P.2 Linear Models and Rates of Change 10 P.3 Functions and Their Graphs 19 P.4 Fitting Models to Data 31 Review Exercises 37 P.S. Problem Solving 39 CHAPTER 1 Limits and Their Properties 41 1.1 A Preview of Calculus 42 1.2 Finding Limits Graphically and Numerically 48 1.3 Evaluating Limits Analytically 59 1.4 Continuity and One-Sided Limits 70 1.5 Infinite Limits 83 SECTION PROJECT: Graphs and Limits of Trigonometric Functions 90 Review Exercises 91 P.S. Problem Solving 93 CHAPTER 2 Differentiation 95 2.1 The Derivative and the Tangent Line Problem 96 2.2 Basic Differentiation Rules and Rates of Change 107 2.3 Product and Quotient Rules and Higher-Order Derivatives 119 2.4 The Chain Rule 130 2.5 Implicit Differentiation 141 SECTION PROJECT: Optical Illusions 148 2.6 Related Rates 149 Review Exercises 158 P.S. Problem Solving 161 iii iv Contents CHAPTER 3 Applications of Differentiation 163 3.1 Extrema on an Interval 164 3.2 Rolle’s Theorem and the Mean Value Theorem 172 3.3 Increasing and Decreasing Functions and the First Derivative Test 179 SECTION PROJECT: Rainbows 189 3.4 Concavity and the Second Derivative Test 190 3.5 Limits at Infinity 198 3.6 A Summary of Curve Sketching 209 3.7 Optimization Problems 218 SECTION PROJECT: Connecticut River 228 3.8 Newton’s Method 229 3.9 Differentials 235 Review Exercises 242 P.S. Problem Solving 245 CHAPTER 4 Integration 247 4.1 Antiderivatives and Indefinite Integration 248 4.2 Area 259 4.3 Riemann Sums and Definite Integrals 271 4.4 The Fundamental Theorem of Calculus 282 SECTION PROJECT: Demonstrating the Fundamental Theorem 296 4.5 Integration by Substitution 297 4.6 Numerical Integration 311 Review Exercises 318 P.S. Problem Solving 321 CHAPTER 5 Logarithmic, Exponential, and Other Transcendental Functions 323 5.1 The Natural Logarithmic Function: Differentiation 324 5.2 The Natural Logarithmic Function: Integration 334 5.3 Inverse Functions 343 5.4 Exponential Functions: Differentiation and Integration 352 5.5 Bases Other Than e and Applications 362 SECTION PROJECT: Using Graphing Utilities to Estimate Slope 372 5.6 Inverse Trigonometric Functions: Differentiation 373 5.7 Inverse Trigonometric Functions: Integration 382 Contents v 5.8 Hyperbolic Functions 390 SECTION PROJECT: St. Louis Arch 400 Review Exercises 401 P.S. Problem Solving 403 CHAPTER 6 Differential Equations 405 6.1 Slope Fields and Euler’s Method 406 6.2 Differential Equations: Growth and Decay 415 6.3 Separation of Variables and the Logistic Equation 423 6.4 First-Order Linear Differential Equations 434 SECTION PROJECT: Weight Loss 442 Review Exercises 443 P.S. Problem Solving 445 CHAPTER 7 Applications of Integration 447 7.1 Area of a Region Between Two Curves 448 7.2 Volume: The Disk Method 458 7.3 Volume: The Shell Method 469 SECTION PROJECT: Saturn 477 7.4 Arc Length and Surfaces of Revolution 478 7.5 Work 489 SECTION PROJECT: Tidal Energy 497 7.6 Moments, Centers of Mass, and Centroids 498 7.7 Fluid Pressure and Fluid Force 509 Review Exercises 515 P.S. Problem Solving 517 CHAPTER 8 Integration Techniques, L’Hôpital’s Rule, and Improper Integrals 519 8.1 Basic Integration Rules 520 8.2 Integration by Parts 527 8.3 Trigonometric Integrals 536 SECTION PROJECT: Power Lines 544 8.4 Trigonometric Substitution 545 8.5 Partial Fractions 554 8.6 Integration by Tables and Other Integration Techniques 563 8.7 Indeterminate Forms and L’Hôpital’s Rule 569 8.8 Improper Integrals 580 Review Exercises 591 P.S. Problem Solving 593 vi Contents CHAPTER 9 Infinite Series 595 9.1 Sequences 596 9.2 Series and Convergence 608 SECTION PROJECT: Cantor’s Disappearing Table 618 9.3 The Integral Test and p-Series 619 SECTION PROJECT: The Harmonic Series 625 9.4 Comparisons of Series 626 SECTION PROJECT: Solera Method 632 9.5 Alternating Series 633 9.6 The Ratio and Root Tests 641 9.7 Taylor Polynomials and Approximations 650 9.8 Power Series 661 9.9 Representation of Functions by Power Series 671 9.10 Taylor and Maclaurin Series 678 Review Exercises 690 P.S. Problem Solving 693 CHAPTER 10 Conics, Parametric Equations, and Polar Coordinates 695 10.1 Conics and Calculus 696 10.2 Plane Curves and Parametric Equations 711 SECTION PROJECT: Cycloids 720 10.3 Parametric Equations and Calculus 721 10.4 Polar Coordinates and Polar Graphs 731 SECTION PROJECT: Anamorphic Art 740 10.5 Area and Arc Length in Polar Coordinates 741 10.6 Polar Equations of Conics and Kepler’s Laws 750 Review Exercises 758 P.S. Problem Solving 761 Contents vii Appendix A Proofs of Selected Theorems A2 Appendix B Integration Tables A20 Answers to Odd-Numbered Exercises A25 Index A115 ADDITIONAL APPENDICES Appendix C Precalculus Review (Online) C.1 Real Numbers and the Real Number Line C.2 The Cartesian Plane C.3 Review of Trigonometric Functions Appendix D Rotation and the General Second-Degree Equation (Online) Appendix E Complex Numbers (Online) Appendix F Business and Economic Applications (Online) A Word from the Authors Welcome to the Ninth Edition of Calculus of a Single Variable! We are proud to offer you a new and revised version of our textbook. Much has changed since we wrote the first edition over 35 years ago. With each edition we have listened to you, our users, and have incorporated many of your suggestions for improvement. 6th 7th 9th 8th Throughout the years, our objective has always been to write in a precise, readable manner with the fundamental concepts and rules of calculus clearly defined and demonstrated. When writing for students, we strive to offer features and materials that enable mastery by all types of learners. For the instructors, we aim to provide a comprehensive teaching instrument that employs proven pedagogical techniques,freeing instructors to make the most efficient use of classroom time. This revision brings us to a new level of change and improvement. For the past several years, we’ve maintained an independent website—CalcChat.com—that provides free solutions to all odd-numbered exercises in the text. Thousands of students using our textbooks have visited the site for practice and help with their homework. With the Ninth Edition, we were able to use information from CalcChat.com,including which solutions students accessed most often,to help guide the revision of the exercises. This edition of Calculuswill be the first calculus textbook to use actual data from students. We have also added a new feature called Capstoneexercises to this edition. These conceptual problems synthesize key topics and provide students with a better under- standing of each section’s concepts. Capstone exercises are excellent for classroom discussion or test prep,and instructors may find value in integrating these problems into their review of the section. These and other new features join our time-tested pedagogy,with the goal of enabling students and instructors to make the best use of this text. We hope you will enjoy the Ninth Edition of Calculus of a Single Variable. As always,we welcome comments and suggestions for continued improvements. viii