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CHAPTER 4
6. Enter “X–2”.
Key operations:
-
2
®
7. The cursor moves to [Y3]. This completes the input of
the functions.
(4) Displaying graphs
• To display a graph, press .
• A graph will be created according to the Y1 and Y2
functions, as shown on the right.
• To cancel the displaying of a graph, press ˚.
(5) Zooming in on graphs (See page 100 for
details.)
• The graph that appears when
is pressed in the above step is displayed in the
default setting range, called window.
• The initial values of the rectangular coordinate graph mode are shown below.
Xmin = -10
Xmax = 10
Xscl = 1
Ymin = -10
Ymax = 10
Yscl = 1
• In the following steps, the intersection and maximum value are obtained. For easy
viewing, zoom in on the graph.
• To zoom in, press
. There are several methods for zooming. Use the sub-menu
of the ZOOM menu to make a selection.
1. Press
.
2. Press 2 to select [2 Box].
(The BOX function allows the selection of a section to
be enlarged by displaying a rectangular box.)
The display returns to the previous graph screen, and
the cursor starts flashing near the center of the display.
* Window means settings that specify the display area.
For details, see CHAPTER 4, “11. Setting a Window”
on page 104.
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