Using Variables
425
Using Variables
A variable is a defined value that can be used multiple times in a
problem. You can define a value or function as a variable within each
application. Within a problem, variables are shared by
TI-Nspire™ applications. For example, you can create a variable in
Calculator, then use or modify it in Graphs & Geometry or Lists &
Spreadsheet within the same problem.
Each variable has a name and a definition and the definition can be
changed. When you change the definition, all occurrences of the variable
in the problem are updated to use the new definition. In the TI-Nspire™
software, a variable has four attributes:
•
Name - User-defined name assigned when the variable is created.
•
Location - Variables are stored in memory.
•
Value - Number, text, mathematical expression, or function.
•
Type - Type of data that can be stored as a variable.
Note
: Variables created with the
Local
command within a user-defined
function or program are not accessible outside that function or program.
Linking values on pages
Values and functions created or defined in one application can interact
with other applications (within the same problem) to share data.
When using linked items, keep in mind:
•
Values can be linked between applications on one page or between
different pages of the same problem.
•
All applications are linked to the same data.
•
If the linked value is changed in the original application, the change
is reflected in all linked usages.
Defining a variable is the first step in linking values.
Creating variables
Any portion or attribute of an object or function created within an
application can be stored as a varible. Examples of attributes that can
become variables are the area of a rectangle, the radius of a circle, the
value contained in a spreadsheet cell or the contents of a row or column,
or a function expression. When you create a variable, it is stored in
memory.
Summary of Contents for TI-Nspire
Page 38: ...26 Setting up the TI Nspire Navigator Teacher Software ...
Page 46: ...34 Getting started with the TI Nspire Navigator Teacher Software ...
Page 84: ...72 Using the Content Workspace ...
Page 180: ...168 Capturing Screens ...
Page 256: ...244 Embedding documents in web pages ...
Page 336: ...324 Polling students ...
Page 374: ...362 Using the Review Workspace ...
Page 436: ...424 Calculator ...
Page 450: ...438 Using Variables ...
Page 602: ...590 Using Lists Spreadsheet ...
Page 676: ...664 Using Notes You can also change the sample size and restart the sampling ...
Page 684: ...672 Libraries ...
Page 714: ...702 Programming ...
Page 828: ...816 Data Collection and Analysis ...
Page 846: ...834 Regulatory Information ...
Page 848: ...836 ...