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6-14 Sequence Graphing
8306SEQN.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:22 PM Printed: 02/19/01 1:36
PM Page 14 of 16
2. Press
y
[
FORMAT
]
Í
to select Time axes format.
3. Press
p
and set the variables as shown below.
n
Min=0 Xmin=0 Ymin=0
n
Max=400 Xmax=400 Ymax=300
PlotStart=1 Xscl=100 Yscl=100
PlotStep=1
4. Press
s
to graph the sequence.
5. Press
r
~
to individually trace the number of
rabbits (
u(
n
)) and wolves (v(
n
)) over time (
n
).
Tip:
Press a number, and then press
Í
to jump to a specific
n
value (month) while in
TRACE
.
6. Press
y
[
FORMAT
]
~
~
Í
to select uv axes
format.
7. Press
p
and change these variables as shown
below.
Xmin=84 Ymin=25
Xmax=237 Ymax=75
Xscl=50 Yscl=10
8. Press
r
. Trace both the number of rabbits (X) and
the number of wolves (
Y) through 400 generations.
Note:
When you press
r
, the
equation for
u
is displayed in the
top-left corner. Press
}
or
†
to
see the equation for
v
.