Texas Instruments TI-89 Titanium User Manual page 426

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