Reference Guide

3
Full Command and Function Reference 3-1
3.Full Command and Function Reference
Introduction
This chapter details the calculator’s commands and functions.
These listings include the following information:
 a brief definition of what the command or function does
 additional information about how it works and how to use it
 the key to press to gain access to it
 any flags that may affect how it works
 a stack diagram showing the arguments it requires (if any)
 related commands or functions
How to Access Commands and Functions
Many of the commands and functions in this reference are not located on the calculator’s keyboard and are accessed
by pressing …µ. This is the right-shifted function of the Pkey, which is the fourth key from the left on
the fourth row of keys from the top. Once accessed, the function or command’s name is found by pressing the
~key and then using the letter keys to spell out the function or command’s name. Usually, pressing the first letter
of the command will move the catalog list close enough to the function to use the ˜key to find the function.
For functions or commands (or symbols) that are located on the calculator’s keyboard as shifted functions of other
keys (such as …µ above), the proper shift key is shown followed by a font symbol indicating the function,
command or symbol written above the key.
In some cases, access is shown with two keys with an ampersand (&) in between, such as !&H. This notation
means that you must press the first key and hold it down while then pressing the second key at the same time.
The next few pages explain how to read the stack diagrams in the command reference, how commands are
alphabetized, and the meaning of command classifications at the upper right corner of each stack diagram.
How to Read Stack Diagrams
Many entries in the command reference include a stack diagram. This is a table showing the arguments that the
command, function, or analytic function takes from the stack in RPN mode or from the argument order in algebraic
mode, and the results that it returns to the stack (in RPN mode) or displays (in algebraic mode; if there is more than
one output, they are written to a list). The “→” character (pronounced “to” as in “to list” for →LIST) in the table
separates the arguments from the results. The stack diagram for a command may contain more than one “argument
→ result” line, reflecting all possible combinations of arguments and results for that command.
Consider this example:
ACOS
Type: Analytic Function
Input/Output:
Level 1/Argument 1 Level 1/Item 1
z
→
acos z
'symb'
→
'ACOS(symb)'
This diagram indicates that the analytic function ACOS (Arc Cosine) takes a single argument from level 1 and returns
one result (to level 1). ACOS can take either a real or complex number or an algebraic object as its argument. In the