Texas Instruments TI-82 STATS Manual Book page 132

Graphing Phase Plots
Example:
Predator-Prey
Model
(continued)
6–14 Sequence Graphing
(continued)
2. Press y [
FORMAT
3. Press p and set the variables as shown below.
nMin=0
nMax=400
PlotStart=1
PlotStep=1
4. Press s to graph the sequence.
5. Press r ~ to individually trace the number of rabbits
( ) and wolves (
u(n)
Tip: Press a number, and then press Í to jump to a specific
value (month) while in
6. Press y [
FORMAT
7. Press p and change these variables as shown below.
Xmin=84
Xmax=237
Xscl=50
8. Press r. Trace both the number of rabbits (
number of wolves (
] Í to select
Time
Xmin=0
Xmax=400
Xscl=100
) over time ( ).
v(n) n
TRACE
.
] ~ ~ Í to select
Ymin=25
Ymax=75
Yscl=10
) through 400 generations.
Y
Note: When you press r, the
equation for
top-left corner. Press } or † to
see the equation for
axes format.
Ymin=0
Ymax=300
Yscl=100
n
axes format.
uv
) and the
X
u
is displayed in the
v
.