Texas Instruments TI-89 사용자 설명서

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 Plots

Using 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.

 The web moves to an orbit 

oscillating between two stable points.

9. On the Window Editor, set 

. 

Then regraph the sequence.

 By starting the web plot at a later 

term, the stable oscillation orbit is 
shown more clearly.

y=3.2x

N

.8x

2

u(n

N

1)

u(n)

y=x