Description
CENGAGE LEARNING Precalculus Enhanced Edition 7Th Edition by David Cohen
Written by David Cohen and co-authors Theodore B. Lee and David Sklar, PRECALCULUS, Seventh Edition, focuses on the use of a graphical perspective to provide a visual understanding of college algebra and trigonometry. Cohen’s texts are known for their clear writing style and outstanding, graded exercises and applications, including many examples and exercises involving applications and real-life data. Combining material from two other Cohen texts, the Seventh Edition accommodates the introduction of trigonometry with either a right-triangle approach or a unit-circle approach. Graphs, visualization of data, and functions are introduced and emphasized early on to aid student understanding. Although the text provides thorough treatment of the graphing calculator, the material is arranged to allow instructors to teach the course with as much or as little graphing utility work as they wish.
New to this Edition:
.New homework problems appear in sections that have been significantly changed and instructions for some old problems have been modified to reflect the new presentation.
.In addition to being honed in numerous sections to improve clarity, this edition combines material from PRECALCULUS: A PROBLEMS-ORIENTED APPROACH with that of PRECALCULUS: WITH UNIT-CIRCLE TRIGONOMETRY, 4th Edition--creating a single book that accommodates the introduction of trigonometry with either a right-triangle approach or a unit-circle approach.
.This edition’s broader content gives instructors the option of introducing trigonometry via right triangles by covering Chapters 6 through 10. Instructors wishing to introduce trigonometry via the unit circle may do so by skipping Chapter 6 and then covering Chapters 7 through 10.
.To keep the text at a manageable length, many "Projects" are now referenced but not included in the book. Instead, they are accessible online at http://www.cengage.com/math/cohen/precalculus7e.
Features:
.Iteration is covered from numerical, graphical, and algebraic viewpoints.
.Exercises, praised for their excellence, range in difficulty from simple to more complex and are designated with an "A," "B," or "C" rating.
.Thorough treatment of the role of the graphing utility is carefully integrated throughout the text. Graphing utility exercises are identified in the exercise sets with an icon. Reviewers have praised this book’s thoughtful approach to the optional use of technology, lauding the way it covers the realistic use of modern technologies while providing a solid foundation in algebraic concepts.
."Writing Mathematics" sections and "Projects" (the latter now referenced in the book and available online) give students opportunities to discuss, explore, learn, and write about mathematics.
.Functions, introduced in Chapter 3, are presented at length using algebraic, verbal, tabular, and graphical forms. Functions as models are introduced and used in examples and exercises.
.The "Graphical Perspective" feature uses graphs to supplement the text discussion and encourage students to produce their own pictures of a graph.
.The book features a strong emphasis on graphs and visualization, with numerical, graphical, and algebraic viewpoints tightly linked throughout to help students understand the material.
About the Author:
David Cohen
late of University of California, Los Angeles
David Cohen, a senior lecturer at UCLA, was the original author of the successful, well-respected precalculus series--COLLEGE ALGEBRA, ALGEBRA AND TRIGONOMETRY, PRECALCULUS: A PROBLEMS-ORIENTED APPROACH, and PRECALCULUS: WITH UNIT CIRCLE TRIGONOMETRY.