Operation Manual

Applications 14-17
8214APPS.DOC TI-82, Chapter 14, English Bob Fedorisko Revised: 02/09/01 9:27 AM Printed:
02/09/01 12:43 PM Page 17 of 20
5. Enter the program:
PROGRAM:ORBIT
:ClrDraw:FnOff
:PlotsOff :Dot
:Un(1,99,1)
!
L
1
:Vn(1,99,1)
!
L
2
:Un(100,198,1)
!
L
3
:Vn(100,198,1)
!
L
4
:Un(199,297,1)
!
L
5
:Vn(199,297,1)
!
L
6
:min(L1)
-
10
!
Xmin
:max(L1)+10
!
Xmax
:10
!
Xscl
:min(L
2
)
-
10
!
Ymin
:max(L
2
)+10
!
Ymax
:10
!
Yscl
:For(I,1,99)
:Pt-On(L
1
(I),L
2
(I))
:End
:For(I,1,99)
:Pt-On(L
3
(I),L
4
(I))
:End
:For(I,1,99)
:Pt-On(L
5
(I),L
6
(I))
:End
6. Execute
prgmORBIT
, which shows the cycle of the numbers of rabbits
(
X
axis) and wolves (
Y
axis) over 297 periods. Use the free-moving
cursor to explore the number of rabbits and wolves.