3.20 Function Graphing
82533F~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:20 PM Printed: 10/27/05 1:55
PM Page 20 of 28
82533F~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:20 PM Printed: 10/27/05 1:55
PM Page 20 of 28
To display the ZOOM menu, press q. You can adjust the
viewing window of the graph quickly in several ways. All
ZOOM instructions are accessible from programs.
ZOO
M
MEMOR
1: ZBox Draws a box to define the viewing window.
2: Zoom In Magnifies the graph around the cursor.
3: Zoom Out Views more of a graph around the cursor.
4: ZDecimal Sets @X and @Y to 0.1.
5: ZSquare Sets equal-size pixels on the X and Y axes.
6: ZStandard Sets the standard window variables.
7: ZTrig Sets the built-in trig window variables.
8: ZInteger Sets integer values on the X and Y axes.
9: ZoomStat Sets the values for current stat lists.
0: ZoomFit Fits YMin and YMax between XMin and XMax.
When you select
1:ZBox, 2:Zoom In, or 3:Zoom Out, the cursor
on the graph becomes the zoom cursor (
+), a smaller version of
the free-moving cursor (
+).
To define a new viewing window using
ZBox, follow these
steps.
1. Select
1:ZBox from the ZOOM menu. The zoom cursor is
displayed at the center of the screen.
2. Move the zoom cursor to any spot you want to define as a
corner of the box, and then press Í. When you move the
cursor away from the first defined corner, a small, square dot
indicates the spot.
3. Press |, }, ~, or †. As you move the cursor, the sides of
the box lengthen or shorten proportionately on the screen.
Note: To cancel ZBox before you press Í, press ‘.
4. When you have defined the box, press Í to replot the
graph.
To use ZBox to define another box within the new graph, repeat
steps 2 through 4. To cancel
ZBox, press ‘.
Exploring Graphs with the ZOOM Instructions
ZOOM Menu
Zoom Cursor
ZBox
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