Texas Instruments TI-82 Graphing Calculator Guidebook

TI-82 GRAPHING CALCULATOR GUIDEBOOK

目

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US FCC Information Concerning Radio Frequency Interference

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference with radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, you can try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/television technician for help.

Caution: Any changes or modifications to this equipment not expressly approved by Texas Instruments may void your authority to operate the equipment.

This manual describes how to use the TI-82 Graphing Calculator. Getting Started gives a quick overview of its features. The first chapter gives general instructions on operating the TI-82. Other chapters describe its interactive features. The applications in Chapter 14 show how to use these features together.

Using this Guidebook Effectively ..... viii
Glossary ..... x
Getting Started: Do This First!
TI-82 Menus ..... 2
First Steps ..... 3
Entering a Calculation: Compound Interest ..... 4
Defining a Function: Box with Lid ..... 6
Defining a Table of Values ..... 7
Zooming In on the Table ..... 8
Changing the Viewing WINDOW ..... 10
Displaying and Tracing the Graph ..... 11
Zooming In on the Graph ..... 12
Finding the Calculated Maximum ..... 13
Other Features ..... 14
Chapter 1: Operating the TI-82
Turning the TI-82 On and Off ..... 1-2
Setting the Display Contrast ..... 1-3
The Display ..... 1-4
Entering Expressions and Instructions ..... 1-6
TI-82 Edit Keys ..... 1-8
Setting Modes ..... 1-9
TI-82 Modes ..... 1-10
Variable Names ..... 1-12
Storing and Recalling Variable Values ..... 1-13
Last Entry ..... 1-14
Last Answer ..... 1-16
TI-82 Menus ..... 1-17
VARS and Y-VARS Menus ..... 1-19
EOS™ (Equation Operating System) ..... 1-20
Error Conditions ..... 1-22

Getting Started: Lottery Chances ..... 2-2
Keyboard Math Operations ..... 2-3
MATH MATH Operations ..... 2-5
MATH NUM (Number) Operations ..... 2-9
MATH HYP (Hyperbolic) Operations ..... 2-11
MATH PRB (Probability) Operations ..... 2-12
ANGLE Operations ..... 2-13
TEST TEST (Relational) Operations ..... 2-15
TEST LOGIC (Boolean) Operations ..... 2-16
Chapter 3: Function Graphing
Getting Started: Graphing a Circle ..... 3-2
Defining a Graph ..... 3-3
Setting Graph Modes ..... 3-4
Defining Functions in the Y= List ..... 3-5
Selecting Functions ..... 3-7
Defining the Viewing WINDOW ..... 3-8
Setting WINDOW FORMAT ..... 3-10
Displaying a Graph ..... 3-11
Exploring a Graph with the Free-Moving Cursor ..... 3-13
Exploring a Graph with TRACE ..... 3-14
Exploring a Graph with ZOOM ..... 3-16
Using ZOOM MEMORY ..... 3-19
Setting ZOOM FACTORS ..... 3-21
Using CALC (Calculate) Operations ..... 3-22
Chapter 4: Parametric Graphing
Getting Started: Path of a Ball ..... 4-2
Defining and Displaying a Parametric Graph ..... 4-3
Exploring a Parametric Graph ..... 4-6
Chapter 5: Polar Graphing
Getting Started: Polar Rose ..... 5-2
Defining and Displaying a Polar Graph ..... 5-3
Exploring a Polar Graph ..... 5-6

Chapter 6: Sequence Graphing

Getting Started: Forest and Trees ..... 6-2
Defining and Displaying a Sequence Graph ..... 6-3
Exploring a Sequence Graph ..... 6-6

Chapter 7: Tables

Getting Started: Roots of a Function ..... 7-2
Defining the Variables ..... 7-3
Defining the Dependent Variable ..... 7-4
Displaying the Table ..... 7-5

Chapter 8: DRAW Operations

Getting Started: Shading a Graph ..... 8-2
DRAW DRAW Menu ..... 8-3
Drawing Lines ..... 8-4
Drawing Horizontal and