Operating the Calculator
188
Displaying a Variable
If the variable is undefined, the variable name is shown in the result.
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.
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.
The variable’s value
did not change.
Summary of Contents for Titanium TI-89
Page 9: ...Getting Started 6 TI 89 Titanium keys Ë Ì Í Ê ...
Page 34: ...Getting Started 31 2 or D 2 B u s i n e s s D B D B Press Result ...
Page 43: ...Getting Started 40 3 0 D B D D B D Press Result ...
Page 44: ...Getting Started 41 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 58: ...Getting Started 55 Example Set split screen mode to TOP BOTTOM Press Result 3 B D ...
Page 70: ...Getting Started 67 ...
Page 175: ...Operating the Calculator 172 From the Keyboard ...
Page 456: ...Tables 453 ...
Page 527: ...Data Matrix Editor 524 ...
