Texas Instruments TI-83 Plus User Manual page 23

Tracing a Conic Section
1. Press
2. Press
Note
Using Free Trace
Conic Graphing does not have a free trace feature. However,
you can use a zoom option to simulate a free trace.
1. Graph a conic section.
2. Press
3. Select
A free cursor is on the screen.
TI-83 Plus Conic Graphing
. A cursor appears on the conic section.
or to trace along the conic section.
Press or to move from one part of a hyperbola to the
other.
Conic Graphing does not allow for continuous tracing. For
example, after you trace an entire circle, the tracing stops. You
can then press the opposite direction arrow to trace the object
in the opposite direction.
.
,
Zoom In Zoom Out
, or .
Zbox
Page 23