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TI-83 Plus Function Graphing 141
4. Press
Í
. The TI-83 Plus adjusts the viewing window by
XFact
and
YFact
; updates the window variables; and replots the selected
functions, centered on the cursor location.
5. Zoom in on the graph again in either of two ways.
•
To zoom in at the same point, press
Í
.
•
To zoom in at a new point, move the cursor to the point that you
want as the center of the new viewing window, and then press
Í
.
To zoom out on a graph, select
3:Zoom Out
and repeat steps 3 through 5.
To cancel
Zoom In
or
Zoom Out
, press
‘
.
ZDecimal
ZDecimal
replots the functions immediately. It updates the window
variables to preset values, as shown below. These values set
@
X
and
@
Y
equal to
0.1
and set the
X
and
Y
value of each pixel to one decimal place.
Xmin=
L
4.7 Ymin=
L
3.1
Xmax=4.7 Ymax=3.1
Xscl=1 Yscl=1