Precalculus : a graphing approach / 
Larson,Roland E. 
 - Lexington :  D.C.Heath and Co.,  c1993 
 - xxx,794pagea :  ill. ;  24cm. 
<br/><br/><label>ISBN: </label>978066 285000 
<br/><br/><label>Subjects--Topical Terms: </label>--mathematics
<br/><br/><label>Dewey Class. No.: </label>515 LAR