Texas Instruments TI-83 Manual Book page 100

ZOOM FACTORS
Checking XFact
and YFact
Changing XFact
and YFact
Using ZOOM
MEMORY Menu
Items from the
Home Screen or
a Program
3-24 Function Graphing
The zoom factors,
(not necessarily integers) greater than or equal to 1. They
define the magnification or reduction factor used to
or around a point.
In Zoom Out
To display the
ZOOM FACTORS
review the current values for
from the
4:SetFactors
shown are the defaults.
You can change
XFact
Enter a new value. The original value is cleared
automatically when you enter the first digit.
Place the cursor on the digit you want to change, and
then enter a value or press { to delete it.
From the home screen or a program, you can store directly
to any of the user-defined
From a program, you can select the
instructions from the
and , are positive numbers
XFact YFact
screen, where you can
XFact
ZOOM MEMORY
and in either of two ways.
YFact
variables.
ZOOM
ZOOM MEMORY
and , select
YFact
menu. The values
and
ZoomSto ZoomRcl
menu.
Zoom