He is the author of several books, including test preparation books for SAT, ACT, GMAT, and AP Calculus AB and BC. William Ma is a math consultant and former chair of the Math Department at the Herricks School District on Long Island. Powerful analytics you can use to assess your test readiness.An appendix of common formulas and theorems frequently tested on the exam.Step-by-step explanations for nearly 800 AP Calculus AB problems.
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