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, and 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:

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Name - User-defined name assigned when the variable is created.

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Location - Variables are stored in memory.

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Value - Number, text, mathematical expression or function.

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Type - Type of data that can be stored as a variable.

Note: Variables created with the Local command within a user-defined function or programme are not accessible outside that function or programme.

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