Texas Instruments TI-89 사용자 설명서
Sequence Graphing
362
„
Zoom
Works just as it does for function graphs.
•
Only
x
(
xmin
,
xmax
,
xscl
) and
y
(
ymin
,
ymax
,
yscl
)
Window variables are affected.
•
The n and plot Window variables (
nmin
,
nmax
,
plotStrt
,
plotStep
) are not affected unless you select 6:ZoomStd
(which sets all Window variables to their standard
values).
values).
…
Trace
Depending on whether you use TIME, CUSTOM, or WEB
axes, Trace operates very differently.
axes, Trace operates very differently.
•
With TIME or CUSTOM axes, you move the cursor along
the sequence one plotstep at a time. To move
approximately ten plotted points at a time, press
the sequence one plotstep at a time. To move
approximately ten plotted points at a time, press
2 B
or
2 A
.
-
When you begin a trace, the cursor is on the first
selected sequence at the term number specified by
plotstrt, even if it is outside the viewing window.
selected sequence at the term number specified by
plotstrt, even if it is outside the viewing window.
-
QuickCenter applies to all directions. If you move the
cursor off the screen (top or bottom, left or right),
press
cursor off the screen (top or bottom, left or right),
press
¸
to center the viewing window on the
cursor location.
•
With WEB axes, the trace cursor follows the web, not the
sequence.
sequence.
‡
Math
Only 1:Value is available for sequence graphs.
•
With TIME and WEB axes, the
u(n)
value (represented
by
yc
) is displayed for a specified n value.
•
With CUSTOM axes, the values that correspond to x and
y depend on the axes you choose.
y depend on the axes you choose.
Tool
For Sequence Graphs: