Texas Instruments TI-89 사용자 설명서
Operating the Calculator
200
Displaying a Variable
Displaying a Variable
Displaying a Variable
Displaying a Variable
If the variable is undefined, the variable name is shown in the result.
Using a Variable in an Expression
Using a Variable in an Expression
Using a Variable in an Expression
Using a Variable in an Expression
1. Type the variable name.
2. Press
¸.
In this example, the variable a is undefined.
Therefore, it is used as a symbolic variable.
Therefore, it is used as a symbolic variable.
Note:
Refer to Symbolic Manipulation for
information about symbolic manipulation.
1. Type the variable name into the
expression.
2. Press
¸ to evaluate the expression.
Note:
To view a list of existing variable
names, use
2 ° as described in
Memory and Variable Management.
If you want the result to replace the variable’s
previous value, you must store the result.
previous value, you must store the result.
The variable’s value
did not change.
did not change.