Texas Instruments Titanium TI-89 User Manual

Sequence Graphing 370
6. On the Window Editor (8$), set the Window variables.
8. Press …. Then use B to trace the web.
As you trace to larger values of nc, notice that xc and yc oscillate between 2.05218
and 3.19782.
Using Custom Plots
Using Custom PlotsUsing Custom Plots
Using Custom Plots
CUSTOM axes give you great flexibility in graphing sequences. As shown in the
following example, CUSTOM axes are particularly effective for showing relationships
between one sequence and another.
nmin=1
nmax=100
plotstrt=1
plotstep=1
xmin=2.68
xmax=6.47
xscl=1
ymin=4.7
ymax=47
yscl=1
7. Regraph the sequence.
Note: The web moves to an orbit
oscillating between two stable points.
9. On the Window Editor, set
plotstrt=50.
Then regraph the sequence.
Note: By starting the web plot at a later
term, the stable oscillation orbit is
shown more clearly.
y=3.2xN.8x
2
u(nN1)
u(n)
y=x

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)