Precalculus :  functions and graphs / 
Franklin Demana, Bert K. Waits, Gregory D. Foley, Daniel Kennedy. 
 - 4th edition. 
 - Reading, Massachusetts :  Addison Wesley Longman, Inc.,  2001. 
 - xix, 960 pages :  illustrations ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0-201-61136-8 Pbk, Bp. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.<br/>Trigonometry.
<br/><br/><label>LC Class. No.: </label>QA 154.2 P74 2001 LC Lib