Preface P-1
Preface
The HP 39G/40G is a feature-rich graphing calculator. It is
also a powerful mathematics learning tool. The HP 39G/40G
is designed so that you can use it to explore mathematical
functions and their properties.
You can get more information on the HP 39G/40G from
Hewlett-Packard’s Calculators web site. You can download
customized aplets from the web site and load them onto your
calculator. Customized aplets are special applications
developed to perform certain functions, and to demonstrate
mathematical concepts.
Hewlett Packard’s Calculators web site can be found at:
www.hp.com/calculators
Manual conventions
The following conventions are used in this manual to
represent the keys that you press and the menu options that
you choose to perform the described operations.
• Key presses are represented as follows:
>6,1@, >&26@, >+20(@, etc.
• Shift keys, that is the key functions that you access by
pressing the >6+,)7@ key first, are represented as follows:
>6+,)7@
CLEAR, >6+,)7@MODES, >6+,)7@ACOS, etc.
• Numbers and letters are represented normally, as follows:
5, 7, A, B, etc.
• Menu options, that is, the functions that you select using
the menu keys at the top of the keypad are represented as
follows:
672?a
,
&$1&/a
,
2.a
.
• Input form fields and choose list items are represented as
follows:
Function, Polar, Parametric
• Your entries as they appear on the command line or
within input forms are represented as follows:
2*X
2
-3X+5
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