xvii WELCOMETOTHE 7TH EDITION In the seventh edition of College Algebra and Trigonometry, we continue our ongoing commitment to providing the best possible text to help instructors teach and students succeed. In this edition, we have remained true to the pedagogical style of the past while staying focused on the needs of today’s students. Support for all classroom types (traditional, corequisite, flipped, hybrid, and online) may be found in this classic text and its supplements backed by the power of Pearson’s MyMathLab for School. In this edition, we have drawn on the extensive teaching experience of the Lial team, with special consideration given to reviewer suggestions. General updates include enhanced readability as we continually strive to make math understandable for students, updates to our extensive list of applications and real-world mathematics problems, use of color in displays and side comments, and coordination of exercises and their related examples. The authors understand that teaching and learning mathematics today can be a challenging task. Some students are prepared for the challenge, while other students require more review and supplemental material. This text is written so that students with varying abilities and backgrounds will all have an opportunity for a successful learning experience. The Lial team believes this to be our best edition of College Algebra and Trigonometry yet, and we sincerely hope that you enjoy using it as much as we have enjoyed writing it. Additional textbooks in this series are College Algebra, Thirteenth Edition Trigonometry, Twelfth Edition Precalculus, Seventh Edition. HIGHLIGHTS OF NEW CONTENT ■ Chapter R has been expanded to include more of the basic concepts many students struggle with. It begins with new Section R.1 Fractions, Decimals, and Percents. Additional new topics have been inserted throughout the chapter, including operations with signed numbers (Section R.3), dividing a polynomial by a monomial (Section R.5), and factoring expressions with negative and rational exponents (Section R.6). Topics throughout the chapter have been reorganized for improved flow. Instructors may choose to cover review topics from Chapter R at the beginning of a course or to insert these topics as-needed in a just-in-time fashion. Either way, students who are under-prepared for the demands of college algebra and trigonometry, as well as those who need a quick review, will benefit from the material contained here. ■ The exercise sets were a key focus of this revision, and Chapters 1 and 2 are among the chapters that have benefitted. Specifically, Section 1.7 Inequalities has new exercises on solving quadratic and rational inequalities, and Section 1.8 Absolute Value Equations and Inequalities contains new exercises that involve the absolute value of a quadratic polynomial. Section 2.3 Functions has new exercises that use analytic methods to determine maximum and minimum values of a function. Preface
RkJQdWJsaXNoZXIy NjM5ODQ=