For courses in Precalculus Take Precalculus from the Authors that Wrote "the" Calculus book Precalculus: Graphical, Numerical, Algebraic - by the nationally recognized author team of Demana, Waits, Foley, Kennedy, and Bock-is the leading choice for graphing-intense courses. Now in its Ninth Edition, this bestseller offers extremely accessible writing and exercises, a balanced approach to problem solving, the most appropriate use of technology, and an easier and more consistent transition from Precalculus to Calculus. A principal feature of this text is the balance among the algebraic, numerical, graphical, and verbal methods of representing problems: the rule of four. This approach reinforces the idea that to understand a problem fully, students need to understand it algebraically as well as graphically and numerically. MyMathLab(R) not included. Students, if MyMathLab is a recommended/mandatory component of the course, please ask your instructor for the correct ISBN and course ID. MyMathLab should only be purchased when required by an instructor. Instructors, contact your Pearson representative for more information. MyMathLab is an online homework, tutorial, and assessment product designed to personalize learning and improve results. With a wide range of interactive, engaging, and assignable activities, students are encouraged to actively learn and retain tough course concepts.