Hp 48g Graphing Calculator Manual do Utilizador descarregar pdf (Página 89)

100

101

Constructing Equations

To start the EquationWriter application:

■ Press («^(equation ). The EquationWriter is accessible from the

stack or from any field in an input form that, can accept algebraic

objects.

After you start the EquationWriter application, you can enter an

equation or expression (or unit object, number, or name) using the

operations available in this environment. See “Entering Equations”

below.

To exit the EquationWriter application:

To put the equation on the stack and exit, press (ENTERf

To discard the current ecjuation and exit, press (CANCEL).

Entering Equations

Occasionally the EquationWriter may not. be able to display your

equation as fast as you type it. However, you can continue typing, and

the HP 48 will remember up to 15 keystrokes and display them when

it ‘‘catches up.”

To enter numbers and names:

■ Key numbers and names in exactly as you w'ould into the command

line. You can also use the menu keys in the VAR, menu as typing

aids for variable names.

To frti'b

multiplication:

To enter +, and =, press (+)■ B and

To do implied multiplication, don't press (^. You can do implied

multiplication (without pressing (^) in some situations—a multiply

sign ( •) is automatically inserted between the following;

n A number followed by an alpha, character, a parenthesis, or a,

prefix function (a function whose argument(s) appear after its

name)—for example, press 6 fSIN ).

□ An alpha character and a prefix function—for example, A

S)©-

n A right parenthesis followed by a left parenthesis.

The EquationWriter 7-3

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