Texas Instruments TI-83 Plus User Manual page 19

To see how different zoom settings affect the graph:
1. Make sure that the conic mode is set correctly (to function,
parametric, or polar, depending on what the equation
requires).
2. Select a conic section from the
3. Select an equation.
4. Enter values for each of the required parameters listed. Use
and
Tip If you enter a value that is invalid for the specific equation, an
error screen displays when you attempt to graph the conic
section.
5. Press
6. Select
7. Press
8. Select other zoom settings to see the differences in the
graph. The graph is displayed after a zoom setting is
selected (except for zoom settings that require another entry,
such as
TI-83 Plus Conic Graphing
to move from one parameter to the next.
.
and view the graph.
Zoom Conic
.
or
Zoom In Zoom Out
main menu.
CONICS
).
Page 19