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.
nMin=0
Xmin=0
Ymin=0
nMax=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
.
