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6. Click the Conversion Operator (►) at the top of the Units list, and press
Enter to paste it to the entry line.
7. Select _ft from the Length category, and press Enter.
8. Press Enter to evaluate the expression.
CAS: Creating a User-defined Unit
As with the pre-defined units, user-defined unit names must begin with an
underscore symbol.
Example: Using the pre-defined units _ft and _min, define a unit named _fpm
that lets you enter velocity values in feet per minute and convert velocity results
to feet per minute.
Now you can use the new velocity unit _fpm.
Working with Variables
When you first store a value in a variable, you give the variable a name.
• If the variable does not already exist, Calculator creates it.
• If the variable already exists, Calculator updates it.
Variables within a problem 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.
For more information, see Using Variables .
Calculator Application 151