Texas Instruments TI-84 Plus Guide Book

Chapter 3: Function Graphing 131
3. Press | or ~ (or enter a value) to select the X value at which to calculate the
derivative, and then press Í.
The cursor is on the solution and the numerical derivative is displayed.
To move to the same x-value for other selected functions, press } or †. To restore the
free-moving cursor, press | or ~.
‰f(x)dx
f(x)dxf(x)dx
f(x)dx
‰
f(x)dx (numerical integral) finds the numerical integral of a function in a specified
interval. It uses the
fnInt( function, with a tolerance of H=1âL3.
To find the numerical integral of a function, follow these steps.
1. Select
7:‰f(x)dx from the CALCULATE menu. The current graph is displayed with
Lower Limit? in the bottom-left corner.
2. Press } or † to move the cursor to the function for which you want to calculate the
integral.

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-