Texas Instruments TI-89 Titanium User Manual

Differential Equation Graphing 398
Differences in Diff Equations and Function Graphing
This module assumes that you already know how to graph y(x) functions as described in
Basic Function Graphing. This section describes the differences.
Setting the Graph Mode
Use 3 to set
Graph = DIFF EQUATIONS before you define differential equations or set
Window variables. The Y= Editor and the Window Editor let you enter information for the
current Graph mode setting only.
Defining Differential Equations on the Y= Editor
8. Graph the selected functions (8%).
Use t0 to specify when initial conditions occur.
You can also set t0 in the Window Editor.
Use yi to specify one or more initial conditions
for the corresponding differential equation.
You can define differential equations y1'(t)
through y99'(t).

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches