Texas Instruments 83PL/CLM/1L1/V - 83 Plus Calc, Manual Book, Page: 201 / 827

TI-83 Plus Sequence Graphing 198
These are the variables (given values are in parentheses):
R = number of rabbits
M = rabbit population growth rate without foxes
(.05)
K = rabbit population death rate with foxes (.001)
W = number of foxes
G = fox population growth rate with rabbits
(.0002)
D = fox population death rate without rabbits (.03)
n = time (in months)
R
n
= R
n
N
1
(1+M
N
KW
n
N
1
)
W
n
= W
n N 1
(1+GR
n N 1
N D)
1. Press
o
in
Seq
mode to display the sequence
Y=
editor. Define the
sequences and initial values for R
n
and W
n
as shown below. Enter
the sequence R
n
as
u( n )
and enter the sequence W
n
as
v( n )
.
2. Press
y . Í
to select
Time
axes format.