Texas Instruments Titanium TI-89, Руководство пользователя

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3D Graphing 380
– or -
8
Í
To change any of these settings, use the same procedure that you use to change other
types of dialog boxes, such as the MODE dialog box.
Examples of Axes Settings
In many cases, the origin (0,0,0) is inside the box, not at a corner. For example, if
xmin = ymin = zmin = L 10
and
xmax = ymax = zmax = 10
, the origin is at the center of
the box.
• The dialog box shows the current graph
format settings.
• To exit without making a change, press
N
.
To display the valid
Axes
settings, highlight
the current setting and press
B
.
• AXES — Shows standard xyz axes.
• BOX — Shows 3-dimensional box axes.
The edges of the box are determined by
the Window variables
xmin
,
xmax
, etc.
z1(x,y) = x
2
+.5y
2