Texas Instruments Titanium TI-89, User Manual

Page: 462 / 977

Additional Graphing Topics 459
Note: Graph
uses the current Window variable settings and is available from the Home
screen’s
†
toolbar menu.
Graph
does not work with sequence graphs or differential equations. For parametric,
polar, and 3D graphs, use the following variations.
Note:
To create a table from the Home screen, use the
Table
command. It is similar to
Graph
. Both share the same expressions.
Graph
does not copy the expression to the Y= Editor. Instead, it temporarily suspends
any functions selected on the Y= Editor. You can trace, zoom, or show and edit
Graph
expressions on the Table screen, just the same as Y= Editor functions.
Clearing the Graph Screen
Each time you execute
Graph
, the new expression is added to the existing ones. To clear
the graphs:
A non-native independent
variable
In PARAMETRIC graphing mode: Graph xExpr , yExpr , t
In POLAR graphing mode:
Graph expr , q
In 3D graphing mode: Graph expr , x , y
If the expression is in
terms of: Use the Graph command
as shown in this example:
Graph 1.25a
ù
cos(a),a
Specify the independent variable;
otherwise, you may get an error.