About the Authors Dennis Donovan, M.S. (Westwood, Massachusetts) has been a math teacher at Xaverian Brothers High School for more than 25 years, teaching AP Calculus (both AB and BC) for more than 20 years. He has served as an AP Calculus Reader and one of nine national Question Leaders for the AP Calculus exam, led professional development workshops for math teachers as a College Board consultant, and worked as a T3 Regional Instructor for Texas Instruments.  David Bock, M.S. (Ithaca, New York) taught AP Calculus during his 35 years at Ithaca High School, was a mathematics instructor at several universities (including Cornell University and Ithaca College), and served for several years as an Exam Reader for the College Board. He currently leads workshops for AP teachers.  Shirley O. Hockett, M.A. (Ithaca, New York) taught mathematics for 45 years, first at Cornell University and later at Ithaca College, where she was named Professor Emerita. In addition to winning numerous awards and authoring six mathematics textbooks, she served as both an Exam Reader and a Table Leader for AP Calculus. About the Publisher Many great things begin with a tiny spark, and for Manuel H. Barron that spark came from a mimeograph machine in the basement of his Brooklyn, NY, bookstore in the late 1930s. People from the community asked Mr. Barron for books to help their children study for the New York State Regents exams. After realizing there wasn't anything available, Mr. Barron created his own study guides. Now, more than 80 years later, Barron’s continues to help millions of learners worldwide prepare for their next steps. With offerings from pre-college prep to world language guides and professional certification exams, Barron’s wants to be part of your success story no matter what learning path you’re on. You can trust Barron’s to provide exceptional products created only by top experts with years of experience in education. From generation to generation, our mission remains the same: Learn, grow, and succeed with Barron’s throughout your life-long learning journey.