A mainstream calculus book with the most flexible and open approach to new ideas and calculator/computer technology. Solid coverage of the calculus of early transcendental functions is now fully integrated in Chapters 1 through 6. A new chapter on differential equations appears immediately after the chapter on techniques of integration. It includes both direction fields and Euler's method, together with the more symbolic elementary methods and applications for both first- and second-order equations. Linear systems and matrices through determinants and eigenvalues are now introduced in Chapter 11. The subsequent multivariable chapters now integrate matrix methods and terminology with traditional multivariable calculus (e.g., the chain rule in matrix form). The CD-ROM accompanying the book contains a functional array of fully integrated learning resources linked to individual sections of the book. The user can view any desired book section in PDF format.

** ***C. Henry Edwards** * is emeritus professor of mathematics at the University of Georgia. He earned his Ph.D. at the University of Tennessee in 1960, and recently retired after 40 years of classroom teaching (including calculus or differential equations almost every term) at the universities of Tennessee, Wisconsin, and Georgia, with a brief interlude at the Institute for Advanced Study (Princeton) as an Alfred P. Sloan Research Fellow. He has received numerous teaching awards, including the University of Georgia's *honoratus* medal in 1983 (for sustained excellence in honors teaching), its Josiah Meigs award in 1991 (the institution's highest award for teaching), and the 1997 state-wide Georgia Regents award for research university faculty teaching excellence. His scholarly career has ranged from research and dissertation direction in topology to the history of mathematics to computing and technology in the teaching and applications of mathematics. In addition to being author or co-author of calculus, advanced calculus, linear algebra, and differential equations textbooks, he is well-known to calculus instructors as author of *The Historical Development of the Calculus* (Springer-Verlag, 1979). During the 1990s he served as a principal investigator on three NSF-supported projects: (1) A school mathematics project including Maple for beginning algebra students, (2) A Calculus-with-*Mathematica* program, and (3) A MATLAB-based computer lab project for numerical analysis and differential equations students.

** ***David E. Penney,** * University of Georgia, completed his Ph.D. at Tulane University in 1965 (under the direction of Prof. L. Bruce Treybig) while teaching at the University of New Orleans. Earlier he had worked in experimental biophysics at Tulane University and the Veteran's Administration Hospital in New Orleans under the direction of Robert Dixon McAfee, where Dr. McAfee's research team's primary focus was on the active transport of sodium ions by biological membranes. Penney's primary contribution here was the development of a mathematical model (using simultaneous ordinary differential equations) for the metabolic phenomena regulating such transport, with potential future applications in kidney physiology, management of hypertension, and treatment of congestive heart failure. He also designed and constructed servomechanisms for the accurate monitoring of ion transport, a phenomenon involving the measurement of potentials in microvolts at impedances of millions of megohms. Penney began teaching calculus at Tulane in 1957 and taught that course almost every term with enthusiasm and distinction until his retirement at the end of the last millennium. During his tenure at the University of Georgia he received numerous University-wide teaching awards as well as directing several doctoral dissertations and seven undergraduate research projects. He is the author of research papers in number theory and topology and is the author or co-author of textbooks on calculus, computer programming, differential equations, linear algebra, and liberal arts mathematics.

Contemporary calculus instructors and students face traditional challenges as well as new ones that result from changes in the role and practice of mathematics by scientists and engineers in the world at large. As a consequence, this sixth edition of our calculus textbook is its most extensive revision since the first edition appeared in 1982. Two entire chapters of the fifth edition have been replaced in the table of contents by two new ones; most of the remaining chapters have been extensively rewritten. Nearly 160 of the book''s over 800 worked examples are new for this edition and the 1854 figures in the text include 250 new computer-generated graphics. Almost 800 of its 7250 problems are new, and these are augmented by over 330 new conceptual discussion questions that now precede the problem sets. Moreover, almost 1100 new true/false questions are included in the Study Guides on the new CD-ROM that accompanies this edition. In summary, almost 2200 of these 8650-plus problems and questions are new, and the text discussion and explanations have undergone corresponding alteration and improvement. PRINCIPAL NEW FEATURES The current revision of the text features Early transcendentalsfully integrated in Semester I. Differential equationsand applications in Semester II. Linear systems and matricesin Semester III. Complete coverage of the calculus of transcendental functions is now fully integrated in Chapters 1 through 6--with the result that the Chapter 7 and 8 titles in the 5th edition table of contents do pot appear in this 6th edition. A new chapter on differential equations (Chapter 8) now appears immediately' after Chapter 7 on techniques of integration. It includes both direction fields and Eider''s method together with the more elementary symbolic methods (which exploit techniques from Chapter 7) and interesting applications of both first- and second-order equations. Chapter 10 (Infinite Series) now ends with a new section on power series solutions of differential equations, thus bringing full circle a unifying focus of second-semester calculus on elementary differential equations. Linear systems and matrices, ending with an elementary treatment of eigenvalues and eigenvectors, are now introduced in Chapter 11. The subsequent coverage of multivariable calculus now integrates matrix methods and terminology with the traditional notation and approach--including (for instance) introduction and extensive application of the chain rule in matrix-product form. NEW LEARNING RESOURCES Conceptual Discussion Questions.The set of problems that concludes each section is now preceded by a brief Concepts: Questions and Discussionset consisting of several open-ended conceptual questions that can be used for either individual study or classroom discussion. The Text CD-ROM.The content of the new CD-ROM that accompanies this text is fully integrated with the textbook material, and is designed specifically for use hand-in-hand with study of the book itself. This CD-ROM features the following resources to support learning and teaching: Interactive True/False Study Guidesthat reinforce and encourage student reading of the text. Ten author-written questions for each section carefully guide students through the section, and students can request individual hints suggesting where in the section to look for needed information. Live Examplesfeature dynamic multimedia and computer algebra presentations--many accompanied by audio explanations--which enhance student intuition and understanding. These interactive examples expand upon many of the textbook''s principal examples; students can change input data and conditions and then observe the resulting changes in step-by-step solutions and accompanying graphs and figures. Walkthrough videosdemonstrate how students can interact with these live examples. Homework Startersfor the principal types of computational problems in each textbook section, featuring both interactive presentations similar to the live examples and (web-linked) voice-narrated videos of pencil-and-paper investigations illustrating typical initial steps in the solution of selected textbook problems. Computing Project Resourcessupport most of the over three dozen projects that follow key sections in the text. For each such project marked in the text by a CD-ROM icon, more extended discussions illustrating Maple, Mathematica,MATLAB, and graphing calculator investigations are provided. Computer algebra system commands can be copied and pasted for interactive execution. Hyperlinked Maple Worksheetscontributed by Harald Pleym of Telemark University College (Norway) constitute an interactive version of essentially the whole textbook. Students and faculty using Maple can change input data and conditions in most of the text examples to investigate the resulting changes in step-by-step solutions and accompanying graphs and figures. PowerPoint Presentationsprovide classroom projection versions of about 350 of the figures in the text that would be least convenient to reproduce on a blackboard. Website.The contents of the CD-ROM together with additional learning and teaching resources are maintained and updated at the textbook website www.prenhall.com/edwards, which includes a Comments and Suggestions center where we invite response from both students and instructors. Computerized Homework Grading System.About 2000 of the textbook problems are incorporated in an automated grading system that is now available. Each problem solution in the system is structured algorithmically so that students can work in a computer lab setting to submit homework assignments for automatic grading. (There is a small annual fee per participating student.) New Solutions Manuals.The entirely new 1900-page Instructor''s Solutions Manual(available in two volumes) includes a detailed solution for every problem in the book. These solutions were written exclusively by the authors and have been checked independently by others. The entirely new 950-page Student Solutions Manual(available in two volumes) includes a detailed solution for every odd-numbered problem in the text. The answers (alone) to most of these odd-numbered problems are included in the answers section at the back of this book. New Technology Manuals.Each of the following manuals is available shrink-wrapped with any version of the text for half the normal price of the manual (all of which are inexpensive): Jensen, Using MATLAB in Calculus(0-13-027268-X) Freese/Stegenga, Calculus Concepts Using Derive(0-13-085152-3) Gresser, TI Graphing Calculator Approach, 2e(0-13-092017-7) Gresser, A Mathematica Approach, 2e(0-13-092015-0) Gresser, A Maple Approach, 2e(0-13-092014-2) THE TEXT IN MORE DETAIL . . . In preparing this edition, we have taken advantage of many valuable comments and suggestions from users of the first five editions. This revision was so pervasive that the individual changes are too numerous to be detailed in a preface, but the following paragraphs summarize those that may be of widest interest. New Problems.Most of the almost 800 new problems lie in the intermediate range of difficulty, neither highly theoretical nor computationally routine. Many of them have a new technology flavor, suggesting (if not requiring) the use of technology ranging from a graphing calculator to a computer algebra system. Discussion Questions and Study Guides.We hope the 330 conceptual discussion questions a