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Prentice Hall
College Algebra, The MyMathLab Edition / Edition 8

College Algebra, The MyMathLab Edition / Edition 8

by Michael Sullivan


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Product Details

ISBN-13: 9780131588189
Publisher: Prentice Hall
Publication date: 02/22/2007
Edition description: New Edition
Pages: 552
Product dimensions: 9.32(w) x 11.08(h) x 0.67(d)

Table of Contents



Chapter R Review

R.1 Real Numbers

R.2 Algebra Essentials

R.3 Geometry Essentials

R.4 Polynomials

R.5 Factoring Polynomials

R.6 Synthetic Division

R.7 Rational Expressions

R.8 nth Roots; Rational Exponents


Chapter 1 Equations and Inequalities

1.1 Linear Equations

1.2 Quadratic Equations

1.3 Complex Numbers; Quadratic Equations in the Complex Number System

1.4 Radical Equations; Equations Quadratic in Form;  Factorable Equations

1.5 Solving Inequalities

1.6 Equations and Inequalities Involving Absolute Value

1.7 Problem Solving: Interest, Mixture, Uniform Motion, and Constant Rate Job  Applications


Chapter 2 Graphs

2.1 The Distance and Midpoint Formulas

2.2 Graphs of Equations in Two Variables; Intercepts; Symmetry

2.3 Lines

2.4 Circles

2.5 Variation


Chapter 3 Functions and Their Graphs

3.1 Functions

3.2 The Graph of a Function

3.3 Properties of Functions

3.4 Library of Functions; Piecewise-defined Functions

3.5 Graphing Techniques: Transformations

3.6 Mathematical Models: Building Functions


Chapter 4 Linear and Quadratic Functions

4.1 Linear Functions and Their Properties

4.2 Building Linear Functions from Data

4.3 Quadratic Functions and Their Properties

4.4 Quadratic Models; Building Quadratic Functions from Data

4.5 Inequalities Involving QuadraticFunctions


 Chapter 5 Polynomial and Rational Functions

5.1 Polynomial Functions and Models

5.2 Properties of Rational Functions

5.3 The Graph of a Rational Function

5.4 Polynomial and Rational Inequalities

5.5 The Real Zeros of a Polynomial Function

5.6 Complex Zeros: Fundamental Theorem of Algebra


Chapter 6   Exponential and Logarithmic Functions

6.1 Composite Functions

6.2 One-to-One Functions; Inverse Functions

6.3 Exponential Functions

6.4 Logarithmic Functions

6.5 Properties of Logarithms

6.6 Logarithmic and Exponential Equations

6.7 Compound Interest

6.8 Exponential Growth and Decay Models; Newton’s Law; Logistic Growth and Decay Models

6.9 Building Exponential, Logarithmic, and Logistic Functions from Data


Chapter 7   Analytic Geometry

7.1 Conics

7.2 The Parabola

7.3 The Ellipse

7.4 The Hyperbola


Chapter 8   Systems of Equations and Inequalities

8.1 Systems of Linear Equations: Substitution and Elimination

8.2 Systems of Linear Equations: Matrices

8.3 Systems of Linear Equations: Determinants

8.4 Matrix Algebra

8.5 Partial Fraction Decomposition

8.6 Systems of Nonlinear Equations

8.7 Systems of Inequalities

8.8 Linear Programming


Chapter 9   Sequences; Induction; the Binomial Theorem

9.1 Sequences

9.2 Arithmetic Sequences

9.3 Geometric Sequences; Geometric Series

9.4 Mathematical Induction

9.5 The Binomial Theorem


Chapter 10  Counting and Probability

10.1 Sets and Counting

10.2 Permutations and Combinations

10.3 Probability


Appendix Graphing Utilities

1 The Viewing Rectangle

2 Graphing Equations in Two Variables

3 Locating Intercepts and Checking for Symmetry

4 Solving Equations Using a Graphing Utility

5 Square Screens

6 Graphing Inequalities in Two Variables

7 Solving Systems of Linear Equations

8 Graphing a Polar Equation

9 Graphing Parametric Equations


To the Instructor

As a professor at an urban public university for over 30 years, I am aware of the varied needs of college algebra students who range from having little mathematical background and a fear of mathematics courses to those who have a strong mathematical education and are highly motivated. For some of your students, this will be their last course in mathematics, while others may decide to further their mathematical education. I have written this text for both groups. As the author of precalculus, engineering calculus, finite math and business calculus texts, and, as a teacher, I understand what students must know if they are to be focused and successful in upper level mathematics courses. However, as a father of four college graduates, I also understand the realities of college life;. I have taken great pains to insure that the text contains solid, student-friendly examples and problems, as well as a clear, seamless, writing style. I encourage; you to share with me your experiences teaching from this text.


The Sixth Edition builds upon a solid foundation by integrating new features and techniques that further enhance student interest and involvement. The. elements of previous editions that have proved successful remain, while many, changes, some obvious, others subtle, have been made. A huge benefit of authoring a successful series is the broad-based feedback upon which improvements and additions are ultimately based. Virtually every change to this edition is the result of thoughtful comments and suggestions made from colleagues and students who have used previous editions. I am sincerely grateful for this feedback and havetried to make changes that improve the flow and usability of the text.


Real Mathematics at Motorola

Each chapter begins with Field Trip to Motorola, a brief description of a current situation at Motorola, followed by Interview at Motorola, a biographical sketch of a Motorola employee. At the end of each chapter is Project at Motorola, written by the Motorola employee, that contains a description, with exercises, of a problem at Motorola that relates to the mathematics found in the chapter. It doesn't get more REAL than this.

Preparing for This Section

Most sections, now open with a referenced list (by section and page number) of key items to review in preparation for the section ahead. This provides a just-in-time review for students.

Chapter R Review

This chapter, a revision of the old Chapter 1, has been renamed to more accurately reflect its content. It may be used as the first part of the course or as a just-in-time review when the content is required in a later chapter. Specific references to this chapter occur throughout the book to assist in the review process.


The Appendix, Graphing Utilities, has been updated and expanded to include the latest features of the graphing calculator. While the graphing calculator remains an option, identified by a graphing icon, references to the Appendix occur at appropriate places in the text for those inclined to use the graphing calculator features of the text.


  • The discussion on Rational Functions now appears in two sections, Rational Functions I and Rational Functions II: Analyzing Graphs. This division should allow the sections to be covered in one teaching period each.
  • The discussion of Polynomial and Rational Inequalities now appears after Polynomial and Rational Functions. This allows us to use information obtained about the graphs to solve the inequalities. Students and instructors will appreciate how easy this usually tough concept is now handled.
  • Zeros of a Polynomial Function now appears in a separate chapter following Polynomial and Rational Functions to provide more flexibility in teaching and testing.
  • Separate chapters on Sequences; Induction; the Binomial Theorem and Counting and Probability also provide more flexibility in coverage.


  • Section OBJECTIVES appear in a numbered list to begin each section.
  • NOW WORK PROBLEM XX appears after a concept has been introduced. This directs the student to a problem in the exercises that tests the concept, insuring that the concept has been mastered before moving on. The Now Work problems are identified in the exercises using yellow numbers and a pencil icon.
  • Optional Comments, Explorations, Seeing the Concept, Examples, and Exercises that utilize the graphing calculator are clearly marked with a calculator icon. Calculator exercises are also identified by the icon and green numbers.
  • References to Calculus are identified by a calculus icon.
  • Historical Perspectives, sometimes with exercises, are presented in context and provide interesting anecdotal information.
  • Varied applications are abundant both in Examples and in Exercises. Many contain sourced data.
  • Discussion, Writing, and Research problems appear in each exercise set, identified by an icon and red numbers. These provide the basis for class discussion, writing projects, and collaborative learning experiences.
  • An extensive Chapter Review provides a fist of important formulas, definitions, theorems, and objectives, as well as a complete set of Review Exercises, with sample test questions identified by blue numbers.


To meet the varied needs of diverse syllabi, this book contains more content than expected in a college algebra course. The illustration shows the dependencies of chapters on each other.

As the chart indicates, this book has been organized with flexibility of use in mind. Even within a given chapter, certain sections can be skipped without fear of future problems.

Chapter R - Review

This chapter, a revision of the old Chapter 1, has been renamed to more accurately reflect its content. It may be used as the first part of the course or as a just-in-time review when the content is required in a later chapter. Specific references to this chapter occur throughout the book to assist in the review process.

Chapter 1 - Equations and Inequalities

Primarily a review of Intermediate Algebra topics, this material is prerequisite for later topics. For those who prefer to treat complex numbers and negative discriminants early, Section 5.3 can be covered at any time after Section 1.3.

Chapter 2 - Graphs

This chapter lays the foundation. Sections 2.5 and 2.6 may be skipped without adverse effects.

Chapter 3 - Functions and Their Graphs

Perhaps the most important chapter. Section 3.6 can be skipped without adverse effects.

Chapter 4 - Polynomial and Rational Functions

Topic selection is dependent on your syllabus.

Chapter 5 - The Zeros of a Polynomial Function

Topic selection is dependent on your syllabus. Section 5.1 is not absolutely necessary, but its coverage makes some computations easier.

Chapter 6 - Exponential and Logarithmic Functions

Sections 6.1-6.5 follow in sequence; Sections 6.6, 6.7, and 6.8 each require Section 6.3.

Chapter 7 - Conics

Sections 7.1-7.4 follow in sequence.

Chapter 8 - Systems of Equations and Inequalities

Sections 8.1-8.2 follow in sequence; Sections 8.3-8.8 require Sections 8.1 and 8.2, and may be covered in any order. Section 8.9 depends on Section 8.8.

Chapter 9 - Sequences; Induction; the Binomial Theorem

There are three independent parts: Sections 9.1-9.3, 9.4, and 9.5.

Chapter 10 - Counting and Probability

Sections 10.1-10.3 follow in order.

To the Student

As you begin your study of College Algebra, you may feel overwhelmed by the number of theorems, definitions, procedures, and equations that confront you. You may even wonder whether or not you can learn all of this material in the time allotted. These concerns are normal. Keep in mind that many elements of College Algebra are all around us as we go through our daily routines. Many of the concepts you will learn to express mathematically, you already know intuitively. For many of you, this may be your last math course, while for others, just the first in a series of many. Either way, this text was written with you in mind. I have taught college algebra courses for over thirty years. I am also the father of four college students who called home from time to time, frustrated and with questions. I know what you're going through. So I have written a text that doesn't overwhelm, or unnecessarily complicate College Algebra, but at the same time it gives you the skills and practice you need to be successful.

This text is designed to help you, the student, master the terminology and basic concepts of College Algebra. These aims have helped to shape every aspect of the book. Many learning aids are built into the format of the text to make your study of the material easier and more rewarding. This book is meant to be a "machine for learning," one that can help you focus your efforts and get the most from the time and energy you invest.


First, and most important, this book is meant to be read—so please, begin by reading the material assigned. You will find that the text has additional explanation and examples that will help you. Also, it is best to read the section before the lecture, so you can ask questions right away about anything you didn't understand.

Many sections begin with "Preparing for This Section," a list of concepts that will be used in the section. Take the short amount of time required to refresh your memory. This will make the section easier to understand and will actually save you time and effort.

A list of OBJECTIVES is provided at the beginning of each section. Read them. They will help you recognize the important ideas and skills developed in the section.

After a concept has been introduced and an example given, you will see NOW WORK PROBLEM XX. Go to the exercises at the end of the section, work the problem cited, and check your answer in the back of the book. If you get it right, you can be confident in continuing on in the section. If you don't get it right, go back over the explanations and examples to see what you might have missed. Then rework the problem. Ask for help if you miss it again.

If you follow these practices throughout the section, you will find that you have probably done many of your homework problems. In the exercises, every "Now Work Problem" number is in yellow with a pencil icon . All the odd-numbered problems have answers in the back of the book and worked-out solutions in the Student Solutions Manual supplement. Be sure you have made an honest effort before looking at a worked-out solution.

At the end of each chapter is a Chapter Review. Use it to be sure you are completely familiar with the equations and formulas listed under "Things to Know." If you are unsure of an item here, use the page reference to go back and review it. Go through the Objectives and be sure you can answer "Yes" to the question "I should be able to ...." If you are uncertain, a page reference to the objective is provided.

Spend the few minutes necessary to answer the "Fill-in-the-Blank" items and the "True/False" items. These are quick and valuable questions to answer.

Lastly, do the problems identified with blue numbers in the Review Exercises. These are my suggestions for a Practice Test. Do some of the other problems in the review for more practice to prepare for your exam.

Please do not hesitate to contact me, through Prentice Hall, with any suggestions or comments that would improve this text. I look forward to hearing from you.

Best Wishes!
Michael Sullivan

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