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5-4-1
Manipulating a Graph on the 3D Graph Window
5-4 Manipulating a Graph on the 3D Graph
Window
This section describes how to enlarge and reduce the size of a graph, how to change the eye
position to view the graph along a particular axis, and how to perform other operations like
automatic rotation.
Important!
• All of the operations described in this section can be performed only while the 3D Graph
window is active.
Enlarging and Reducing the Size of a Graph
A displayed 3D graph can be zoomed so it is enlarged or reduced. The zoom operation is
always performed based on the center of the Graph window. You cannot select the area to
be zoomed.
u
To enlarge a graph
Perform any one of the following operations:
• Tap
W
.
• Tap [Zoom] and then [Zoom In].
• Press the
+
key.
u
To reduce the size of a graph
Perform any one of the following operations:
• Tap
E
.
• Tap [Zoom] and then [Zoom Out].
• Press the
-
key.
Starting from the normal size, you can enlarge a graph 14 steps or reduce its size 15 steps.
Switching the Eye Position
The following items describe how to change the eye position and view a displayed 3D graph
along a particular axis. All of the example displays below show the graph of the expression
z
=
x
2
/2 –
y
2
/8, which we graphed under “3D Graph Example” on page 5-3-3.
• To view the graph facing the
x
-axis, tap [Zoom] and then
[View-
x
], or press the
x
key.