Texas Instruments Titanium TI-89 User Manual

Differential Equation Graphing 433
6. Press:
,
9
— or —
@8ÍSet
Axes = ON, Labels = ON,
Solution Method = RK, and
Fields = FLDOFF.
Important: For 3rd- or higher-order
equations, you must set
Fields=FLDOFF.
Otherwise, an
Undefined variable error
occurs when graphing.
7. In the Y= Editor, press:
@2 ‰ Set
Axes = TIME.
Note: With Axes=TIME, the solution to the
selected equation is plotted against time
(t).
8. In the Window Editor (8$), set
the Window variables.
t0=0
tmax=10
tstep=.1
tplot=0
xmin=
L1
xmax=10
xscl=1.
ymin=L3
ymax=3
yscl=1
ncurves=0
diftol=.001

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)