Essentials of precalculus with calculus previews / Dennis G. Zill, Jacqueline M. Dewar. Zill, Dennis G., 1940- Dewar, Jacqueline M. Precalculus. QA39.3 .Z55 2012 512.1 22 ZIE Includes bibliographical references and index. Sudbury, MA : Jones & Bartlett Learning, c2012. c2012. 2012 Text xix, 393 p. : eng