Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 89

To use to define another box within the new graph, repeat steps 2 through 4. To cancel
ZBox
, press '.
ZBox
Zoom In, Zoom Out
magnifies the part of the graph that surrounds the cursor location.
Zoom In
greater portion of the graph, centered on the cursor location. The
determine the extent of the zoom.
To zoom in on a graph, follow these steps.
1. Check and
XFact YFact
2. Select from the
2:Zoom In
3. Move the zoom cursor to the point that is to be the center of the new viewing window.
4. Press Í. The TI-83 Plus adjusts the viewing window by
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
To cancel or
Zoom In Zoom Out
ZDecimal
replots the functions immediately. It updates the window variables to preset values, as
ZDecimal
shown below. These values set @
one decimal place.
Xmin= 4.7
L
Xmax=4.7
Xscl=1
ZSquare
replots the functions immediately. It redefines the viewing window based on the current
ZSquare
values of the window variables. It adjusts in only one direction so that @
graph of a circle look like a circle.
graph (not the intersection of the axes) becomes the midpoint of the new graph.
; change as needed.
menu. The zoom cursor is displayed.
ZOOM
and repeat steps 3 through 5.
3:Zoom Out
, press '.
and @ equal to 0.1 and set the X and Y value of each pixel to
X Y
Ymin= 3.1
L
Ymax=3.1
Yscl=1
and remain unchanged. The midpoint of the current
Xscl Yscl
Zoom Out
and
XFact YFact
and ; updates the
XFact YFact
, which makes the
X= @ Y
Chapter 3: Function Graphing
displays a
settings
82