The Barnett, Ziegler, Byleen College Algebra/Precalculus series is designed to be user friendly and to maximize student comprehension. The goal of this series is to emphasize computational skills, ideas, and problem solving rather than mathematical theory. Precalculus, 5/e, introduces a unit circle approach to trigonometry and can be used in one or two semester college algebra with trigonometry or precalculus courses. The large number of pedagogical devices employed in this text will guide a student through the course. Integrated throughout the text, the students and instructors will find Explore-Discuss boxes which encourage students to think critically about mathematical concepts. In each section, the worked examples are followed by matched problems that reinforce the concept that is being taught. In addition, the text contains an abundance of exercises and applications that will convince students that math is useful. A Smart CD is packaged with the seventh edition of the book. The CD tutorial reinforces important concepts, and provides students with extra practice problems.

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Examples and Matched Problems:

Integrated throughout the text, completely worked examples are used to introduce concepts and demonstrate problem-solving techniques. The examples are followed by similar matched problems that the student can work while reading the material. For easy reference, answers to the matched problems are located at the end of each section. This active involvement in the learning process helps students develop a more thorough understanding of algebraic concepts and processes.

Exploration and Discussion:

Interspersed at appropriate places in every section, Explore-Discuss boxes encourage students to think critically about mathematics and are excellent opportunities for additional group work.

Explore-Discuss material can be used in class, or as an out-of-the class activity.

Balanced Exercise Sets: Precalculus contains over 5,900 problems. Exercise sets are found at the end of each section in the text, and are divided into A (routine, easy mechanics), B (more difficult mechanics), and C (difficult mechanics and some theory) levels of difficulty so that students at all levels can be challenged.

Applications: One of the primary objectives of this book is to give the student substantial experience in modeling and solving real-world problems. Over 600 application exercises help convince even the most skeptical student that mathematics is relevant to every day life. An Applications Index is included to help locate particular applications.

Group Activities: A Group Activity is located at the end of each chapter involving many of the concepts discussed in that chapter. These activities strongly encourage the verbalization of mathematical concepts, results, and processes.

Technology: The generic term 'graphing utility' is used to refer to any of the various graphing calculators or computer software packages that might be available to a student using this book. The use of technology is optional with this text, which contain graphing utility exercises and examples, where appropriate, throughout the text. All of these examples and exercises can be omitted without sacrificing content coverage.

Chapter Review sections are provided at the end of each chapter and include a thorough review of all of the important terms and symbols. This recap is followed by a comprehensive set of review exercises. Furthermore, Cumulative Review Exercises are provided after every second or third chapter, for additional reinforcement.

Unit Circle Approach: Precalculus takes a unit circle approach to the initial coverage of trigonometry.

Exercise Sets: The exercise sets for each section and end of chapter reviews have been extensively revised. Many of the new exercises focus on exploration and modeling.

SMART CD: Each copy of the text is now packaged with a SMART CD to help students master concepts and practice problem-solving. Exploratory Interactive Diagrams (JAVA applets) are now included on the SMART CD.

NetTutor is a revolutionary new web-based learning environment for the live dissemination of mathematical content. NetTutor offers your students live, personalized tutoring via the internet. Using NetTutor's powerful WWWhiteboard software, students can post a question and receive prompt feedback from an expert in their subject. The WWWhiteboard allows students and tutors to use proper mathematical notation as well as other highlighting features - truly making this a unique learning experience. Students may also post questions to the Q&A Center and receive a reply within 24 hours. Visiting the Message Center allows students to discuss difficult concepts among themselves, while the Archive Center provides a browseable list of questions and answers maintained by the subject tutor. NetTutor is FREE and an invaluable aid for all students; the study partner who always has the answer.

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