About the Author
PETER H. SELBY is the author of two other Wiley Self-TeachingGuides: Practical Algebra and Geometry and Trigonometry forCalculus, both revised by STEVE SLAVIN, PhD, who is AssociateProfessor of Economics at Union County College, Cranford, NewJersey. Dr. Slavin is also the author of All the Math You'll EverNeed: A Self-Teaching Guide and Economics: A Self-Teaching Guide,both available from John Wiley & Sons, Inc.