HP 49g Graphing Calculator - Manual (Page 115)

• Rigorous
Check this option to specify that you do not want tel tenxis simplified
to
X .
• Simp Non-Rational
Check this option to specify that non-rational expressions are
simplified.
Using the computer algebra system
The HP 49G computer algebra system consists of a collection of
commairds and fimctions that you apply to expressions. Cormnands and
frmctions appear in the same way on the menus, but they differ in the way
that they operate.
Cormnands have the following properties:
® They produce one result.
® They caraiot be included in an algebraic object.
Fimctions have the following properties:
® They can produce more than one result.
® They can be a part of an algebraic expression.
• You need to evaluate functions in order to get results. That is, once you
apply a function to an object, you need to press
command, in order to get a result. , or use the EVAL
See the Advanced User’s Guide or the Pocket Guide for details of whether
an operation is a fimction or a command.
In this chapter, commands and fimctions are referred to
collectively as commands.
Working with expressions Page 5-5