Operation Manual

Parametric Graphing 4-5
8204PARA.DOC TI-82, Chapter 4, English Bob Fedorisko Revised: 02/09/01 9:08 AM Printed: 02/09/01
12:37 PM Page 5 of 6
Setting the WINDOW FORMAT
Press
p ~
to display the current
WINDOW FORMAT
settings. The
formats are shared with the other graphing modes.
Displaying a Graph
When you press
s
, the TI
.
82 plots the selected parametric equations.
It evaluates both the
X
and the
Y
component for each value of
T
(from
Tmin
to
Tmax
in intervals of
Tstep
) and then plots each point defined by
X
and
Y
.
The
WINDOW
variables define the viewing
WINDOW
.
As a graph is plotted, the TI
.
82 updates
X
,
Y
, and
T
.
Smart Graph applies to parametric graphs.
WINDOW Variables and Y-VARS Menus
From the Home screen, you can:
¦
Access functions by using the name of the component of the equation
as a variable.
¦
Select or deselect parametric equations from a program.
¦
Store parametric equations.
¦
Store values directly to
WINDOW
variables.