Precalculus :  Enhanced with graphing utilities / 
Sullivan, Michael , Sullivan Michael III 
 - 5th ed 
 - New Jersey :  Pearson/Prentice Hall,  2009. 
 - xxix,918 p,:  ill,; 
<br/><br/><label>ISBN: </label>9780136015789 
<br/><br/><label>LC Class. No.: </label>QA331.3  / .S94  2009