Mathcad 3.1 :  user's guide. 
 Mathcad 8 user's guide 

 - Cambridge, Mass., USA :  MathSoft,  c1998. 
 - [viii], 372 p. :  ill. ;  23 cm. 
<br/><br/> Includes index.  Official user's guide for Mathcad 8 Professional, Mathcad 8 Professional Academic, and Mathcad 8 Standard. 
<br/><br/><label>ISBN: </label>1576820394 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>MathCAD.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Computer programs.<br/>Mathematical analysis--Computer programs.<br/>Computer software.<br/>Mathematics--Software.<br/>Numerical analysis--Software.