Texas Instruments TI-84 PLUS SILV Guidebook - Page 119
Min=0, Max=400, PlotStart=1, Xscl=100, s
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D = fox population death rate without rabbits n = time (in months) Rn = RnN1(1+MNKWnN1) Wn = WnN1(1+GRnN1ND) (.03) 1. Press o in Seq mode to display the sequence Y= editor. Define the sequences and initial values for Rn and Wn as shown below. Enter the sequence Rn as u(n) and enter the sequence Wn as v(n). 2. Press y . Í to select Time axes format. 3. Press p and set the variables as shown below. nMin=0 nMax=400 PlotStart=1 PlotStep=1 Xmin=0 Xmax=400 Xscl=100 Ymin=0 Ymax=300 Yscl=100 4. Press s to graph the sequence. 5. Press r ~ to individually trace the number of rabbits (u(n)) and foxes (v(n)) over time (n). Note: Press a number, and then press Í to jump to a specific n value (month) while in TRACE. Chapter 6: Sequence Graphing 112
Chapter 6: Sequence Graphing
112
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.
3.
Press
p
and set the variables as shown below.
4.
Press
s
to graph the sequence.
5.
Press
r
~
to individually trace the number of rabbits (
u(
n
)
) and foxes (
v(
n
)
) over time (
n
).
Note:
Press a number, and then press
Í
to jump to a specific
n
value (month) while in
TRACE.
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)
n
Min=0
n
Max=400
PlotStart=1
PlotStep=1
Xmin=0
Xmax=400
Xscl=100
Ymin=0
Ymax=300
Yscl=100