Texas Instruments Voyage 200, Руководство пользователя

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Parametric Graphing 351
Note:
During a trace, you can also evaluate
x(t)
and
y(t)
by typing the
t
value and
pressing
¸
. You can use QuickCenter at any time during a trace, even if the cursor is
still on the screen.
Tool For Parametric Graphs:
Free-Moving
Cursor Works just as it does for function graphs.
„
Zoom
Works just as it does for function graphs, with the
following exceptions:
• Only
x
(
xmin
,
xmax
,
xscl
) and
y
(
ymin
,
ymax
,
yscl
)
Window variables are affected.
• The
t
Window variables (
tmin
,
tmax
,
tstep
) are not
affected unless you select 6:ZoomStd (which sets
tmin = 0
,
tmax = 2 p
, and
tstep = p /24
).
…
Trace
Lets you move the cursor along a graph one tstep at a
time.
• When you begin a trace, the cursor is on the first
selected parametric equation at
tmin
.
• QuickCenter applies to all directions. If you move the
cursor off the screen (top or bottom, left or right), press
¸
to center the viewing window on the cursor
location.
• Automatic panning is not available. If you move the
cursor off the left or right side of the screen, the
Voyage™ 200 will not automatically pan the viewing
window. However, you can use QuickCenter.