Hp Prime Graphing Calculator Manual do Utilizador descarregar pdf (Página 431)

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101

Variables 427

Variables

Variables are placeholders for objects (such as function

definitions, numbers, matrices, the results of calculations,

and the like). Some are built-in and cannot be deleted. But

you can also create your own.

Many built-in variables are automatically assigned objects

as a result of some operation (such as defining a polar

function, performing a calculation, or setting an option).

For example, if you define a polar function, that definition

is assigned to variable named R

to R

. If you use the

Function app to find the slope of a curve at some x-value,

the slope is assigned to a variable named Slope. And if

you choose binary as the base for integer arithmetic, a

built-in variable named Base is given the value 0. If you

had chosen octal instead, Base would have been given

the value 1.

Creating variables Variables you create are assigned whatever value you

give them. You can assign a value to certain built-in

variables (such as the Home variables). You can also

create your own variables. Example 1 below gives an

example of assigning a value to a built-in variable, and

example 2 illustrates how to create a variable and assign

a value to it

Example 1: To assign 

to the built-in variable A:

Szj AaE

Your stored value

appears as shown at the

right. If you then wanted

to multiply your stored

value by 5, you could

enter:

Aas5E

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