Varberg, Dale E. <br/><br/>
Precalculus  a graphing approach 
Dale Varberg, Thomas D. Varberg ; with the help of Antonio Quesada. 
 - Englewood Cliffs, N.J.  Prentice Hall  1994. 
 - xiv, 514 p.  ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0130107034 
<br/><br/><label>LCCN: </label>94009110  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functions--Data processing.<br/>Graphic calculators.
<br/><br/><label>LC Class. No.: </label>QA331.3  / .V37 1994 
<br/><br/><label>Dewey Class. No.: </label>512.13  / B2617p