Casio fx-5800P Press this key:, To input this character:, A Formula Editing Screen Operations, A Performing Calculation with a User Formula, 1(abc), 2(ΑΒΓ), 3(αβγ)

A Formula Editing Screen Operations

The formula editing screen is used for saving a built-in formula under a new name, for editing a formula, and for creating a new formula. You can perform the following operations on the formula editing screen.

•The formula editing screen supports input for calculation formulas that can be input using CALC (page 90). As with CALC, you can also input comment text that appears when you display the calculation formula. For more information, see “Displaying Comment Text on the Value Assignment Screen” on page 92.

•The following types of character names can be used in a formula.-1-character alphabetic or Greek character variables (like z or α)-2-character variables with indexesTo input a variable like this, press z4(ALPHA) to display the menu shown below.

To input this character:	Press this key:
Lower-case Alphabetic	1(abc)
Upper-case Greek	2(ΑΒΓ)
Lower-case Greek	3(αβγ)
Numeric Index	4( 1 2 3)
Upper-case Alphabetic Index	5(ABC)
Lower-case Alphabetic Index	6( a b c)

To input upper-case alphabetic characters, use normal upper-case input operations like S i(A).

A Performing Calculation with a User Formula

Since user formulas are saved as programs, they are executed using the same procedures as those for program execution. For details about the procedure, see “Running a Program from the Prog List or Fmla List Screen” (page 109).

Operation (assignment of values to variables) after executing a user formula is the same as those for the built-in formulas.

Program Mode (PROG)

You can use the PROG Mode (N5) to create and store programs for calculations you need to perform on a regular basis. You can assign a name to a program when you store it, which simplifies recall, editing, deletion, and other file management operations.

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