Texas Instruments TITANIUM TI-89 User Manual

Page 474

Additional Graphing Topics

474

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,

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

cos(a),a

Specify the independent variable;
otherwise, you may get an error.