Texas Instruments TI-84 Plus Guide Book

Chapter 3: Function Graphing 127
1. Select 1:value from the CALCULATE menu. The graph is displayed with X= in the
bottom-left corner.
2. Enter a real value, which can be an expression, for
X between Xmin and Xmax.
3. Press Í.
The cursor is on the first selected function in the Y= editor at the
X value you entered,
and the coordinates are displayed, even if
CoordOff format is selected.
To move the cursor from function to function at the entered
X value, press } or †. To
restore the free-moving cursor, press | or ~.
zero
zerozero
zero
zero finds a zero (x-intercept or root) of a function using solve(. Functions can have more
than one x-intercept value;
zero finds the zero closest to your guess.
The time
zero spends to find the correct zero value depends on the accuracy of the
values you specify for the left and right bounds and the accuracy of your guess.
To find a zero of a function, follow these steps.

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	-