Operating the Calculator 197
Storing a Value in a Variable
Storing a Value in a VariableStoring a Value in a Variable
Storing a Value in a Variable
1. Enter the value you want to store, which can be an expression.
2. Press §. The store symbol (!) is displayed.
To store to a variable temporarily, you can use the “with” operator. Refer to “Substituting
Values and Setting Constraints” in Symbolic Manipulation.
Displaying a Variable
Displaying a VariableDisplaying a Variable
Displaying a Variable
If the variable is undefined, the variable name is shown in the result.
3. Type the variable name.
Note: TI-89 Titanium users should use
j as necessary when typing variable
names.
4. Press ¸.
1. Type the variable name.
2. Press ¸.
In this example, the variable a is undefined.
Therefore, it is used as a symbolic variable.
Note: Refer to Symbolic Manipulation for
information about symbolic manipulation.
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