Texas Instruments TITANIUM TI-89 - Manual (Page 194)

Operating the Calculator 194
From the example above, the syntax for factor is:
Note: For details about the parameters, refer to that command’s description in the
Technical Reference module.
Viewing CATALOG Help Viewing CATALOG Help Viewing CATALOG Help Viewing CATALOG Help
You can display a command's parameters in a dialog box by pressing ƒ
Help . The
parameters are the same as those displayed on the status line.
Some commands, such as ClrDraw , do not require parameters. If you select one of these
commands, parameters will not display on the status line and you will see Unavailable if
you press
ƒ
Help.
Press N to exit the CATALOG Help dialog box.
factor(expression)
– or –
factor(expression,variable)
required
optional
Indicated
command and its
parameters.