Information and examples on these commands are available in the help
facility of the calculator. For example, the description of EXPLN is shown in
the left-hand side, and the example from the help facility is shown to the
Expansion and factoring using trigonometric
The TRIG menu, triggered by using ‚Ñ, shows the following
These functions allow to simplify expressions by replacing some category
of trigonometric functions for another one.
For example, the function
ACOS2S allows to replace the function arccosine (acos(x)) with its
expression in terms of arcsine (asin(x)).
Description of these commands and examples of their applications are
available in the calculator's help facility (IL@HELP).
The user is
invited to explore this facility to find information on the commands in the