Getting started 1-7
HELPWITH The HP 39gs built-in help is available in HOME only. It 
provides syntax help for built-in math functions. 
Access the HELPWITH command by pressing   
SYNTAX and then the math key for which you require 
syntax help.
Example Press   SYNTAX
Note: Remove the left parenthesis from built-in 
functions such as sine, cosine, and tangent before 
invoking the HELPWITH command.
Math keys HOME ( ) is the place to do calculations.
Keyboard keys. The most common operations are 
available from the keyboard, such as the arithmetic (like 
) and trigonometric (like  ) functions. Press   
to complete the operation:   256  
displays 16.
.
MATH menu. Press 
 to open the MATH 
menu. The MATH menu is a 
comprehensive list of math 
functions that do not appear 
on the keyboard. It also 
includes categories for all other functions and constants. 
The functions are grouped by category, ranging in 
alphabetical order from Calculus to Trigonometry.
• The arrow keys scroll through the list ( ,  ) 
and move from the category list in the left column 
to the item list in the right column ( , ).
• Press   to insert the selected command onto the 
edit line.
• Press   to dismiss the MATH menu without 
selecting a command. 
• Pressing   displays the list of Program 
Constants. You can use these in programs that 
you develop.
HP 39gs English.book  Page 7  Wednesday, December 7, 2005  11:24 PM