Texas Instruments TI-89 Titanium User Manual page 419

To examine this harmonic oscillator in more detail, use a split screen to graph the
manner in which y and y' change with respect to time (t).
9. Press 3 and change the mode
settings on
Page 2
the dialog box, which redraws the
MODE
graph.
To display different graphs in both
Note:
parts of a split screen, you must use the
2 mode.
-graph
10. Press 2 a to switch to the right side
of the split screen.
11. Use † to select
The right side uses the same equations
as the left side. However, no equations
are selected initially in the right side.
12. Press:
,
9
— or —
@ 8 Í Set
Because
Important:
plot a time axis, you must change the
Fields setting.
13. In the Y= Editor, press:
@ 2 ‰and make sure
Differential Equation Graphing
as shown. Then close
and .
y1' y2'
Fields = FLDOFF
Fields=DIRFLD
turns off all fields.
FLDOFF
Axes = TIME
.
cannot
.
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