Precalculus : graphs and models / John W. Coburn, J. D. Herdlick. Coburn, John W. Herdlick, John D. Functions Graphic methods Textbooks. Trigonometry Graphic methods Textbooks. QA331.3 .C6325 2012 515 22 COP Includes index. New York, NY : McGraw-Hill, c2012. c2012. 2012 Text 1 v (unpaged) : eng