Texas Instruments TI-81 Manuals

Manuals and User Guides for Texas Instruments TI-81. We have 1 Texas Instruments TI-81 manual available for free PDF download: Manual Book

Texas Instruments TI-81 Manual Book (194 pages)

TI TI-81: User Guide

Brand: Texas Instruments | Category: Calculator | Size: 4.54 MB

Table of Contents
5
Using this Manual Effectively
9
The Keyboard
12
Entering a Calculation
14
Continuing a Calculation
15
Graphic Features
16
Graphic Keys
16
Defining Functions to Graph
17
Checking the Viewing Rectangle
18
Displaying the Graph
19
Zooming in on the Graph
20
Moving between the Graph and Range Screens
21
Moving the Cursor Along a Function
22
Using Zoom Box
24
Other Capabilities
26
Operation
27
The Keyboard Overview
28
The Second and Alpha Keys
29
Turning on and off
30
Setting the Display Contrast
31
When to Replace Batteries
31
The Display
32
The Home Screen
32
Display Cursors
32
Menu Screens
33
Graph Screens
33
Editing Screens
33
The Equation Operating System
34
Order of Evaluation
34
Implied Multiplication
35
Using Parentheses
35
Entering a Negative Number
35
Negation
35
Entering Expressions for Evaluation
36
Editing Expressions
38
The Cursor-Movement Keys
38
The Edit Keys
38
Inserting in Expressions
39
Deleting from Expressions
39
Setting Modes
40
Checking Mode Settings
40
Changing Mode Settings
40
Leaving the Mode Screen
40
Normal, Scientific, or Engineering Notation Display Format
41
Floating or Fixed Decimal Display Setting
41
Radians or Degrees Angle Setting
41
Function or Parametric Graphing Setting
42
Connected Line or Dot Graph Display
42
Sequential or Simultaneous Plotting
42
Grid off or Grid on
42
Entering Numbers in Scientific Notation
43
Selecting from a Menu
44
The Menu Keys
44
Leaving a Menu
44
Moving from One Menu to Another
45
Selecting an Item from a Menu
45
Using a Menu Item in an Expression
45
Storing and Recalling Variable Values
46
Valuables
46
Storing Valuables in Variables
46
Displaying the Value of a Variable
47
Using Variables in Expressions
47
Storing and Recalling a Value from a Variable
47
Last Answer
48
Using Last Answer in Place of Parentheses
48
Last Entry
49
Performing Iterative Calculations with Last Entry
49
Clearing Expressions and Entries
50
Clearing a Value
50
Clearing the Home Screen
50
Using CLEAR to Cancel a Menu
50
Leaving a Menu or Edit Screen
51
Error Conditions
52
Diagnosing Errors
52
Correcting an Error
53
Resetting
54
Results of Resetting
54
Math and Test Operations
55
The Keyboard Math Functions
56
Using the MATH Menus
57
Using the MATH (Mathematical) Menu
58
Using the NUM (Number) Menu
60
Using the HYP (Hyperbolic) Menu
61
Using the PRB (Probability) Menu
62
Using the TEST (Relational) Menu
63
Using the Relational Operations
64
Notes about TEST Menu Operations
64
Function Graphing
65
Defining a Graph
66
Setting Graph Modes
67
Checking Graph Modes
67
Changing Graph Modes
67
Defining Functions in the Y= List
68
Selecting Functions
70
Turning a Function "On" or "Off"
70
Defining the Viewing Rectangle
71
Displaying a Graph
72
The GRAPH Screen
72
The "Smart Graph" Feature
72
Exploring a Graph with the Free-Moving Cursor
73
Exploring a Graph with the TRACE Feature
74
Exploring a Graph with the ZOOM Features
75
The ZOOM Menu
75
Defining the Zoom Box
76
Using Zoom in
77
Using Zoom out
78
Setting Zoom Factors
79
Checking Xfact and Yfact
79
Changing Xfact and Yfact
79
Leaving Zoom Factors
79
Using Other Zoom Features
80
Square
80
Standard
80
Trig/Integer
80
Using RANGE Variables
81
Storing a Range Variable
81
Using the Y-VARS Menu
82
Using the Name of a Function in the Y= List as a Variable
82
Turning a Function in the Y= List on or off
83
Graphing a Circle
84
Parametric Graphing
85
Defining and Displaying a Parametric Graph
86
Displaying the Components of Parametric Equations
86
Entering Expressions to Define Components of Parametric Equations
86
Selecting Parametric Equations
87
Setting the RANGE Variables
87
Using the RANGE Variables and Y-VARS Menus
88
Exploring a Parametric Graph
89
The Trace Feature
89
The Zoom Features
89
Simulating Motion
90
Graphing a Polar Equation
91
Graphing a Parametric Equation
92
The DRAW Features
93
The DRAW Menu
94
The DRAW Instructions
95
Before Drawing on a Graph
95
Leaving DRAW
95
Clearing Drawing on a Graph
96
Drawing a Line
97
Using the Line Instruction from a Graph
97
Using the Line Instruction from the Home Screen or a Program
97
Drawing a Point
98
Using the PT-On Instruction from a Graph
98
Using the PT-On Instruction from the Home Screen or a Program
98
Using the PT-Off and PT-Chg Instructions
98
Drawing a Function
99
Using the Drawf Instruction
99
Shading an Area on a Graph
100
The Shading Parameters
100
Shading a Drawing
101
Shading an Area between Two Functions
102
Using Matrices
103
The MATRX (Matrix) Menus
104
Defining a Matrix
105
Selecting a Matrix
105
Accepting or Changing Matrix Dimensions
105
Entering and Editing Matrix Elements
106
Leaving the MATRIX Edit Screen
106
Clearing a Matrix
106
Displaying a Stored Matrix
107
Copying One Matrix to Another
107
Using a Matrix in an Expression
107
Results of Matrix Calculations
107
Matrix Math Functions
108
Using the Row Operations
110
The Rowswap Function
110
Swapping Rows in a Matrix
110
Using the Row+ Function
111
Using the *Row Function
111
Using the *Row+ Function
111
Storing and Recalling a Matrix Element
112
Using a Matrix Element in an Expression
112
Storing and Recalling a Matrix Dimension
113
Reducing a Matrix
114
Performing Statistical Calculations
115
The STAT (Statistical) Menus
116
Setting up a Statistical Analysis
117
Statistical Data
117
Clearing Previous Data
117
Entering and Editing Data
118
Entering a New Set of Data
118
Leaving the DATA Edit Screen
118
Editing Statistical Data
119
Inserting Statistical Data
119
Deleting Statistical Data
119
Sorting Statistical Data
120
Reviewing Sorted Data
120
Calculating One-Variable Statistics
121
Calculating Two-Variable Statistics
122
The Regression Models
123
Statistical Results Variables
124
The VARS Menu
124
Displaying a Statistical Results Variable
126
Using a Statistical Results Variable in an Expression
126
Using Regeq
127
Drawing Statistical Data
128
Plotting the Data
128
Histogram
129
Scatter Plot
129
Line Drawing
129
Storing and Recalling a Data Value
130
Analyzing One-Variable Statistics
131
Analyzing Two-Variable Statistics
132
Programming
133
The PRGM (Program) Menus
134
While Entering or Editing a Program
135
While a Program Is Executing
135
Entering a Program
136
Selecting a Program
136
Notes about Entering Program Commands
137
Leaving the Program Edit Screen
137
Editing a Program Command
138
Inserting a Program Command
138
Deleting a Program Command
138
Executing a Program from the Home Screen
139
"Breaking" a Program
139
Erasing a Program
140
Accessing the Programming Instructions Menus
141
The Control Instructions
142
The Lbl and Goto Instructions
142
The if Instructions
142
The IS Instruction
143
The DS Instruction
143
The Pause Instruction
143
The End Instruction
143
The Input/Output Instructions
144
The Disp Instruction
144
The Input Instruction
145
The Disphome Instruction
145
The Dispgraph Instruction
145
The Clrhome Instruction
145
Sample Program
146
Program Features
147
Calling Other Programs (the Execute Instructions)
148
Calling a Program from Another Program
148
Notes about Calling Programs
149
Setting Modes from a Program
150
The MODE Menu
150
Applications
151
Solving a System of Linear Equations
152
Solving a System of Nonlinear Equations
153
Graphing a Piecewise Defined Function
154
Exploring End Behavior of a Rational Function
155
Analyzing Statistical Data Graphically
156
Determining Maximum Volume of an Open Box
157
Simulating Motion with Parametric Equations
158
Graphing the Inverse of a Relation
160
Graphing the Unit Circle and Trigonometric Curves
161
Program: Numerical Solve Routine
162
Program: Numerical Integration
164
Program: Building a Table of Function Values
166
Program: Plotting the Derivative
168
Program: Guess the Coefficients
170
Commands
171
Replacing the Batteries
182
Computational Accuracy
183
Error Codes
184
Handling a Difficulty
187
Support and Service Information
188
Product Support
188
Other TI Products and Services
188
Product Service
188
Warranty Information
189
Customers in the U.S. and Canada Only
189
All Customers Outside the U.S. and Canada
189
Index
190

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