Precalculus :  concepts in context / 
prepared by John A. Lutts ... [et al.]. 
 - Boston :  PWS Publishing Co.,  c1996. 
 - vi, 170 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0534198007 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functions.