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Full Command And Function Reference - HP 48gII Advanced User's Reference Manual

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3.Full Command and Function Reference

Introduction
This chapter details the hp49g+/hp48gII 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
!
Computer Algebra System Commands and Functions
CAS-specific commands and functions are included in this chapter with a description of what the item does. For
more detailed information on CAS-specific items, see the listing for each CAS item in the next chapter. For example,
the CAS command "ABCUV" is included in this chapter, but the only description given is:
CAS:
From polynomials a, b and constant c give polynomials u and v such that au+bv =c .
The CAS: indicates that this is a computer algebra system item and that the next chapter contains a listing
giving more information on the entry.
How to Access Commands and Functions
Many of the commands and functions in this reference are not located on the hp49g+/hp48gII keyboard and are
accessed by pressing ...µ . This is the right-shifted function of the P key, 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 hp49g+/hp48gII 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
Each entry in the command reference includes a stack diagram. This is a table showing the arguments that the
command, function, or analytic function takes from the stack and the results that it returns to the stack. 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.
RPL Programming Examples 3-1
3

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