Texas Instruments TI-89 Titanium User Manual page 99

Steps and keystrokes
4. Display the
Window Editor
Window variables as shown to the right.
Press 8 $ 0 D 10 D .1 D 0 D
? 10 D 110 D 10 D ? 10 D 120 D 10
D 0 D .001 D 20
5. Display the Graph screen.
Because you did not specify an initial
condition, only the slope field is drawn (as
specified by
Fields=SLPFLD
dialog box).
FORMATS
Press 8 %
6. Return to the
Y= Editor
condition:
yi1=10
Press 8 # ¸ 10 ¸
7. Return to the Graph screen.
Initial conditions entered in the
always occur at t
the initial condition and plots to the right.
Then it plots to the left.
Press 8 %
Previews
, and set the
in the
GRAPH
and enter an initial
Y= Editor
. The graph begins at
0
Display
The initial condition is
marked with a circle.
96