Defining Variables
Any portion or attribute of an object or function created within an application can be stored as a variable. Examples of attributes that can become variables include the:
| • | Area of a rectangle |
| • | Radius of a circle |
| • | Value contained in a spreadsheet cell |
| • | Contents of a row or column in a spreadsheet |
| • | Function expression |
When you create a variable, it is stored in memory.
Types of Variables
You can store the data types listed in the following table as variables.
|
Data type |
Examples |
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|---|---|---|---|---|---|---|---|---|
|
Expression |
2.54 |
1.25E6 |
2p |
xmin/10 |
2+3i |
(x-2)2 |
|
|
|
List |
{2, 4, 6, 8} |
{1, 1, 2} |
{"red", "blue", "green"} |
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|
Matrix |
|
This can be entered as: {1, 2, 3, 3, 6, 9} |
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|
Character string |
"Hello" |
"xmin/10" |
"The answer is:" |
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|
Function, program |
myfunc( arg ) |
ellipse( x, y, r1, r2) |
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|
Measurement |
area |
perimeter |
length |
slope |
angle |
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