Texas Instruments TI-89 Titanium User Manual page 357

Example: Divergence
1. On the Y= Editor (8 #), define u1(n) = 3.2u1(nN1) N .8(u1(nN1))
ui1 = 4.45.
2. Set
Axes = TIME
3. On the Window Editor (8 $), set the Window variables.
nmin=0
nmax=10
plotstrt=1
plotstep=1
4. Graph the sequence (8 %).
Because the sequence quickly
diverges to large negative values,
only a few points are plotted.
5. On the Y= Editor, set
6. On the Window Editor (8 $), set the Window variables.
nmin=0
nmax=10
plotstrt=1
plotstep=1
Sequence Graphing
.
xmin=0
ymin=
xmax=10
ymax=10
xscl=1
yscl=1
Axes = WEB
xmin= 10 ymin=
L
xmax=10 ymax=10
xscl=1 yscl=1
L 75
u(n)
and
Build Web = AUTO
10
L
2
. Set initial value
n
.
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