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Precalculus: A Unit Circle Approach, 3rd edition

Published by Pearson (January 1, 2021) © 2018

  • J S Ratti University of South Florida
  • Marcus S. McWaters University of South Florida
  • Leslaw Skrzypek University Of South Florida
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For courses in Precalculus.

Providing the rigor of solid mathematics with an engaging and friendly approach

As teachers, Ratti and McWaters saw firsthand where their Precalculus and Calculus students struggled, where they needed help making connections, and what material they needed to be successful in calculus. They decided to partner and write this text with the primary goal of preparing students to be successful in calculus and future STEM courses. Their experience in the classroom shows in each chapter. The focus on conceptual development, real-life applications, and extensive exercises, encourages a deeper understanding of the mathematics. Precalculus: A Unit Circle Approach, 3rd Edition, includes thorough coverage of topics as preparation for calculus, including; trig identities, difference quotient, functional composition, decomposition and emphasizes graphing techniques/transformations.

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MyLab™ Math is an online homework, tutorial, and assessment program designed to work with this text to engage students and improve results. Within its structured environment, students practice what they learn, test their understanding, and pursue a personalized study plan that helps them absorb course material and understand difficult concepts. At University of South Florida, the authors’ school, student results improved when using this book with MyLab Math. Published results are available at Pearsonmylabandmastering.com on the Results page. For the new edition, MyLab Math continues to expand the comprehensive auto-graded exercise options. The pre-existing exercises were carefully reviewed, vetted, and improved using aggregated student usage and performance data over time. In addition, MyLab Math includes new options to support conceptual learning, visualization, and student preparedness.


Students, if interested in purchasing this title with MyLab Math, ask your instructor for the correct package ISBN and Course ID. Instructors, contact your Pearson representative for more information.

Table of Contents

  1. Graphs and Functions
    • 1.1 Graphs of Equations
    • 1.2 Lines
    • 1.3 Functions
    • 1.4 A Library of Functions
    • 1.5 Transformations of Functions
    • 1.6 Combining Functions; Composite Functions
    • 1.7 Inverse Functions
  2. Polynomial and Rational Functions
    • 2.1 Quadratic Functions
    • 2.2 Polynomial Functions
    • 2.3 Dividing Polynomials and the Rational Zeros Test
    • 2.4 Rational Functions
    • 2.5 Polynomial and Rational Inequalities
    • 2.6 Zeros of a Polynomial Function
    • 2.7 Variation
  3. Exponential and Logarithmic Functions
    • 3.1 Exponential Functions
    • 3.2 Logarithmic Functions
    • 3.3 Rules of Logarithms
    • 3.4 Exponential and Logarithmic Equations and Inequalities
    • 3.5 Logarithmic Scales; Modeling
  4. Trigonometric Functions
    • 4.1 Angles and Their Measure
    • 4.2 The Unit Circle; Trigonometric Functions of Real Numbers
    • 4.3 Trigonometric Functions of Angles
    • 4.4 Graphs of the Sine and Cosine Functions
    • 4.5 Graphs of the Other Trigonometric Functions
    • 4.6 Inverse Trigonometric Functions
  5. Analytic Trigonometry
    • 5.1 Trigonometric Identities
    • 5.2 Sum and Difference Formulas
    • 5.3 Double-Angle and Half-Angle Formulas
    • 5.4 Product-to-Sum and Sum-to-Product Formulas
    • 5.5 Trigonometric Equations
  6. Applications of Trigonometric Functions
    • 6.1 Right-Triangle Trigonometry
    • 6.2 The Law of Sines
    • 6.3 The Law of Cosines
    • 6.4 Vectors
    • 6.5 The Dot Product
    • 6.6 Polar Coordinates
    • 6.7 Polar Form of Complex Numbers; DeMoivre’S Theorem
  7. Systems of Equations and Inequalities
    • 7.1 Systems of Equations in Two Variables
    • 7.2 Systems of Linear Equations in Three Variables
    • 7.3 Systems of Inequalities
    • 7.4 Matrices and Systems of Equations
    • 7.5 Determinants and Cramer’S Rule
    • 7.6 Partial-Fraction Decomposition
    • 7.7 Matrix Algebra
    • 7.8 The Matrix Inverse
  8. Analytic Geometry
    • 8.1 Conic Sections: Overview
    • 8.2 The Parabola
    • 8.3 The Ellipse
    • 8.4 The Hyperbola
    • 8.5 Rotation of Axes
    • 8.6 Polar Equations of Conics
    • 8.7 Parametric Equations
  9. Further Topics in Algebra
    • 9.1 Sequences and Series
    • 9.2 Arithmetic Sequences; Partial Sums
    • 9.3 Geometric Sequences and Series
    • 9.4 Mathematical Induction
    • 9.5 The Binomial Theorem
    • 9.6 Counting Principles
    • 9.7 Probability
  10. An Introduction to Calculus
    • 10.1 Finding Limits Using Tables and Graphs
    • 10.2 Finding Limits Algebraically
    • 10.3 Infinite Limits and Limits at Infinity
    • 10.4 Introduction to Derivatives
    • 10.5 Area and the Integral

Appendix A. Review

  • A.1 The Real Numbers; Integer Exponents
  • A.2 Polynomials
  • A.3 Rational Expressions
  • A.4 Radical and Rational Exponents
  • A.5 Topics in Geometry
  • A.6 Equations
  • A.7 Inequalities
  • A.8 Complex Numbers

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