Texas Instruments TI-89 Titanium User Manual page 356

6. On the Window Editor, change the Window variables.
nmin=1
nmax=25
plotstrt=1
plotstep=1
7. Regraph the sequence.
Web plots are always shown as
lines, regardless of the selected
display style.
During a trace, you can
Note:
move the cursor to a specified n
value by typing the value and
pressing ¸.
8. Press .... As you press B, the trace cursor follows the web. The screen displays the
cursor coordinates nc, xc, and yc (where xc and yc represent
respectively).
As you trace to larger values of nc, you can see xc and yc approach the convergence
point.
When the nc value changes, the cursor is on the sequence. The next time you
Note:
press B, nc stays the same but the cursor is now on the
Sequence Graphing
xmin= L 10 ymin=
xmax=10 ymax=10
xscl=1 yscl=1
L 10
u(n)
y= L .8x + 3.6
y=x
y=x
u(n N 1)
and
u(n N 1) u(n)
reference line.
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