Texas Instruments TI-89 Titanium User Manual

Basic Function Graphing 320
5. Press ¸. A 4 at the top of the screen marks the lower bound.
Finding the Derivative (Slope) at a Point
1. From the
Graph screen, press ‡ and select 6:Derivatives. Then select 1:dy/dx from
the submenu.
2. As necessary, use D and C to select the applicable function.
Finding the Numerical Integral over an Interval
1. From the
Graph screen, press ‡ and select 7:‰f(x)dx.
2. As necessary, use D and C to select the applicable function.
Note: Typing x values is a quick way to set the limits.
6. Set the upper bound, and press ¸.
The cursor moves to the intersection, and
its coordinates are displayed.
3. Set the derivative point. Either move the
cursor to the point or type its x value.
4. Press ¸.
The derivative at that point is displayed.
y2(x)=2xN7

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