Texas Instruments Titanium TI-89, User Manual

Page: 426 / 977

Differential Equation Graphing 423
4. In the Y= Editor, press:
@ 2
‰
Set
Axes = TIME
.
5. In the Window Editor (
8 $
), set
the Window variables.
t0=0
tmax=10
tstep=
p /24
tplot=0
xmin= L 1
xmax=10
xscl=5
ymin=
L 10
ymax=40
yscl=5
ncurves=0
diftol=.001
6. Graph the differential equations
(
8 %
).
7. Press
…
to trace. Then press
3
¸
to
see the number of foxes (
yc
for
y1
) and
rabbits (
yc
for
y2
) at
t=3
.
Note:
Use
C
and
D
to move the trace
cursor between the curves for
y1
and
y2
.
y2(t)
y1(t)