Texas Instruments TI-89 사용자 설명서
3D Graphing
381
8 Í
to set
to set
Coordinates = POLAR
.
Tool
For 3D Graphs:
Free-Moving
Cursor
Cursor
The free-moving cursor is not available.
„
Zoom
Works essentially the same as it does for function graphs,
but remember that you are now using three dimensions
instead of two.
but remember that you are now using three dimensions
instead of two.
•
Only the following zooms are available:
2:ZoomIn
,
3:ZoomOut
,
5:ZoomSqr
,
6:ZoomStd
,
A:ZoomFit
,
B:Memory
,
C:SetFactors
•
Only
x
(
xmin
,
xmax
),
y
(
ymin
,
ymax
), and
z
(
zmin
,
zmax
) Window variables are affected.
•
The
grid
(
xgrid
,
ygrid
) and
eye
(
eye
q
,
eye
f
,
eye
ψ
)
Window variables are not affected unless you select
6:ZoomStd
(which resets these variables to their standard
values).
…
Trace
Lets you move the cursor along a grid wire from one grid
point to the next on the 3D surface.
point to the next on the 3D surface.
•
When you begin a trace, the cursor appears at the
midpoint of the xy grid.
midpoint of the xy grid.
•
QuickCenter is available. At any time during a trace,
regardless of the cursor’s location, you can press
regardless of the cursor’s location, you can press
¸
to
center the viewing cube on the cursor.
•
Cursor movement is restricted in the x and y directions.
You cannot move the cursor beyond the viewing cube
boundaries set by
You cannot move the cursor beyond the viewing cube
boundaries set by
xmin
,
xmax
,
ymin
, and
ymax
.