HP 39gs Mathematical calculations

To change views Each view is a separate environment. To change a view,

select a different view by pressing , , keys or select a view from the VIEWS menu. To change

to HOME, press . You do not explicitly close the current view, you just enter another one—like passing from one room into another in a house. Data that you enter is automatically saved as you enter it.

To save aplet configuration

You can save an aplet configuration that you have used, and transfer the aplet to other HP 39gs calculators. See “Creating new aplets based on existing aplets” on page 19-1.

Mathematical calculations

The most commonly used math operations are available from the keyboard. Access to the rest of the math

functions is via the MATH menu ().

To access programming commands, press CMDS. See “Programming commands” on page 18-13for further information.

Where to start

The home base for the calculator is the HOME view

( ). You can do all calculations here, and you can

access all operations.

Entering expressions

•Enter an expression into the HP 39gs in the same left- to-right order that you would write the expression. This is called algebraic entry.

•To enter functions, select the key or MATH menu item for that function. You can also enter a function by using the Alpha keys to spell out its name.

•Press to evaluate the expression you have in the edit line (where the blinking cursor is). An expression can contain numbers, functions, and variables.

Getting started 1-19