Texas Instruments TI-84 Plus Guide Book

Chapter 8: Draw Instructions 192
Drawing Tangent Lines
Drawing Tangent LinesDrawing Tangent Lines
Drawing Tangent Lines
Drawing a Tangent Line Directly on a Graph
Drawing a Tangent Line Directly on a GraphDrawing a Tangent Line Directly on a Graph
Drawing a Tangent Line Directly on a Graph
To draw a tangent line when a graph is displayed, follow these steps.
1. Select
5:Tangent( from the DRAW menu.
2. Press † and } to move the cursor to the function for which you want to draw the
tangent line. The current graph’s Y=
function is displayed in the top-left corner, if
ExprOn is selected.
3. Press ~ and | or enter a number to select the point on the function at which you
want to draw the tangent line.
4. Press Í. In
Func mode, the X value at which the tangent line was drawn is
displayed on the bottom of the screen, along with the equation of the tangent line. In
all other modes, the
dy/dx value is displayed.

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	-