Texas Instruments Titanium TI-89 User Manual

Differential Equation Graphing 430
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 as shown. Then close
the
MODE dialog box, which redraws the
graph.
Note: To display different graphs in both
parts of a split screen, you must use the
2
-graph mode.
10. Press 2a to switch to the right side
of the split screen.
11. Use † to select
y1' and y2'.
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 —
@8Í Set
Fields = FLDOFF.
Important: Because Fields=DIRFLD cannot
plot a time axis, you must change the
Fields setting.
FLDOFF turns off all fields.
13. In the Y= Editor, press:
@2 ‰and make sure
Axes = TIME.

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)