Texas Instruments TI-89 Titanium Manual

This function will allow you to solve for a specific variable. For
example, solve for: 3x^3-2x*y+3y=2
• Step 1 On your home screen press F2 and then press 1 or enter.
• Step 2 Enter in the equation after solve as:
solve(3x^3-2x*y+3y=2,y)
• Step 3 Press enter and it will solve for y.
You can also solve for a system of equations using the solve
function. For example: 3x-5y=4 and -2x+5y=6
• Step 1 On your home screen press F2 and then press 1 or enter .
• Step 2 Enter in the equation after solve as so: solve(3x-5y=4
and -2x+5y=6, {x,y}). *You can access the word and by
pressing 2
ND
, 5, 8, 8.
• Step 3 Press enter and it will solve for x and y.

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