Precalculus :  a graphing approach / 
Franklin Demana ... [et. al.] 
 - 4th ed. 
 - Reading, Mass. :   Addison-Wesley,  1996. 
 - xxi, 784, (various paging) p. :  ill. (some col.) ;  25 cm. 
<br/><br/><label>ISBN: </label>0201822970 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.<br/>Trigonometry.
<br/><br/><label>LC Class. No.: </label>QA 154.2 D43 1996