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406 Chapter 23: Activities

23ACTS.DOC TI-89/TI-92 Plus: Activities (English) Susan Gullord Revised: 02/23/01 1:24 PM Printed: 02/23/01 2:20 PM Page 406 of 26

Enter the expressions shown below on the Home screen.

factor(x^3

5x)

displays a

rational result.

factor(x^3+5x)

displays a

rational result.

factor(x^3

5x,x)

displays

a real result.

cfactor(x^3+5x,x)

displays

a complex result.

Finding Rational, Real, and Complex Factors

This activity shows how to find rational, real, or complex

factors of expressions. Detailed information about the steps

used in this example can be found in Chapter 3: Symbolic

Manipulation.

Finding Factors

Default Chapter5
- Table of Contents5
- Flash Applications12
- TI-89 / TI-92 Plus Features. Appendix A Provides One Convenient12
- Keystroke Differences14
- What's New16
Chapter 1: Getting Started18
- Getting the TI.89 Ready to Use19
- Getting the TI.92 Plus Ready to Use20
- Setting the Contrast and Selecting a Language21
- Performing Computations25
- Graphing a Function28
Chapter 2: Operating the Calculator30
- Turning the TI.89 / TI.92 Plus on and off31
- Setting the Display Contrast32
- The TI.89 Keyboard33
- The TI.92 Plus Keyboard34
- Modifier Keys35
- Entering Alphabetic Characters38
- Home Screen40
- Entering Numbers42
- Entering Expressions and Instructions43
- Entering an Expression44
- Formats of Displayed Results46
- Editing an Expression in the Entry Line49
- Menus51
- Dialog Boxes52
- Using the Custom Menu54
- Selecting an Application55
- Setting Modes57
- Using the Clean up Menu to Start a New Problem60
- Using the Catalog Dialog Box61
- Storing and Recalling Variable Values64
- Reusing a Previous Entry or the Last Answer66
- Auto-Pasting an Entry or Answer from the History Area69
- Status Line Indicators in the Display70
- Finding the Software Version and ID Number72
Chapter 3: Symbolic Manipulation75
- Preview of Symbolic Manipulation75
- Using Undefined or Defined Variables76
- Using Exact, Approximate, and Auto Modes78
- Automatic Simplification81
- Delayed Simplification for Certain Built-In Functions83
- Substituting Values and Setting Constraints84
- Overview of the Algebra Menu87
- Common Algebraic Operations89
- Overview of the Calc Menu92
- Common Calculus Operations93
- User-Defined Functions and Symbolic Manipulation94
- If You Get an Out-Of-Memory Error96
- Special Constants Used in Symbolic Manipulation97
Chapter 4: Constants and Measurement Units98
- Preview of Constants and Measurement Units99
- Entering Constants or Units100
- Converting from One Unit to Another102
- Setting the Default Units for Displayed Results104
- Creating Your Own User-Defined Units105
- List of Pre-Defined Constants and Units106
Chapter 5: Additional Home Screen Topics110
- Saving the Home Screen Entries as a Text Editor Script111
- Cutting, Copying, and Pasting Information112
- Creating and Evaluating User-Defined Functions114
- Using Folders to Store Independent Sets of Variables117
- If an Entry or Answer Is "Too Big120
Chapter 6: Basic Function Graphing122
- Preview of Basic Function Graphing123
- Overview of Steps in Graphing Functions124
- Setting the Graph Mode125
- Defining Functions for Graphing126
- Selecting Functions to Graph128
- Setting the Display Style for a Function129
- Defining the Viewing Window130
- Changing the Graph Format131
- Graphing the Selected Functions132
- Displaying Coordinates with the Free-Moving Cursor133
- Tracing a Function134
- Using Zooms to Explore a Graph136
- Using Math Tools to Analyze Functions139
Chapter 7: Parametric Graphing144
- Preview of Parametric Graphing145
- Overview of Steps in Graphing Parametric Equations146
- Exploring the Graph146
- Differences in Parametric and Function Graphing147
Chapter 8: Polar Graphing150
- Preview of Polar Graphing151
- Overview of Steps in Graphing Polar Equations152
- Differences in Polar and Function Graphing153
- Preview of Sequence Graphing157
- Overview of Steps in Graphing Sequences158
- Differences in Sequence and Function Graphing159
- Setting Axes for Time, Web, or Custom Plots163
- Using Web Plots164
- Using Custom Plots167
- Using a Sequence to Generate a Table168
Chapter 9 Sequence Graphing170
Chapter 10: 3D Graphing170
- Preview of 3D Graphing171
- Overview of Steps in Graphing 3D Equations173
- Differences in 3D and Function Graphing174
- Moving the Cursor in 3D177
- Rotating And/Or Elevating the Viewing Angle179
- Animating a 3D Graph Interactively181
- Changing the Axes and Style Formats182
- Contour Plots184
- Example: Contours of a Complex Modulus Surface187
- Implicit Plots188
- Example: Implicit Plot of a more Complicated Equation190
Chapter 11: Differential Equation Graphing192
- Preview of Differential Equation Graphing193
- Overview of Steps in Graphing Differential Equations195
- Differences in Diff Equations and Function Graphing196
- Setting the Initial Conditions201
- Defining a System for Higher-Order Equations203
- Example of a 2Nd-Order Equation204
- Example of a 3Rd-Order Equation206
- Setting Axes for Time or Custom Plots207
- Example of Time and Custom Axes208
- Example Comparison of RK and Euler210
- Example of the Desolve( ) Function213
- Troubleshooting with the Fields Graph Format214
Chapter 12: Additional Graphing Topics219
- Preview of Additional Graphing Topics219
- Collecting Data Points from a Graph220
- Graphing a Function Defined on the Home Screen221
- Graphing a Piecewise Defined Function223
- Graphing a Family of Curves225
- Using the Two-Graph Mode226
- Drawing a Function or Inverse on a Graph229
- Drawing a Line, Circle, or Text Label on a Graph230
- Saving and Opening a Picture of a Graph234
- Animating a Series of Graph Pictures236
- Saving and Opening a Graph Database237
- Preview of Tables239
- Overview of Steps in Generating a Table240
- Setting up the Table Parameters241
- Displaying an Automatic Table243
- Building a Manual (Ask) Table246
Chapter 13 Tables248
Chapter 14: Split Screens248
- Preview of Split Screens249
- Setting and Exiting the Split Screen Mode250
- Selecting the Active Application252
- Preview of the Data/Matrix Editor255
Chapter 15256
- Overview of List, Data, and Matrix Variables256
- Data Variable257
- Starting a Data/Matrix Editor Session258
- Entering and Viewing Cell Values260
- Inserting and Deleting a Row, Column, or Cell263
- Defining a Column Header with an Expression265
- Using Shift and Cumsum Functions in a Column Header267
- Sorting Columns268
- Saving a Copy of a List, Data, or Matrix Variable269
Chapter 16: Statistics and Data Plots270
- Preview of Statistics and Data Plots271
- Overview of Steps in Statistical Analysis275
- Performing a Statistical Calculation276
- Statistical Calculation Types278
- Statistical Variables280
- Defining a Statistical Plot281
- Statistical Plot Types283
- Using the Y= Editor with Stat Plots285
- Graphing and Tracing a Defined Stat Plot286
- Using Frequencies and Categories287
- If You Have a CBL 2/CBL or CBR289
Chapter 17: Preview of Programming293
- Preview of Programming293
- Running an Existing Program295
- Starting a Program Editor Session297
- Overview of Entering a Program299
- Overview of Entering a Function302
- Calling One Program from Another304
- Using Variables in a Program305
- Using Local Variables in Functions or Programs307
- String Operations309
- Conditional Tests311
- Using If, Lbl, and Goto to Control Program Flow312
- Using Loops to Repeat a Group of Commands314
- Configuring the TI-89 / TI-92 Plus317
- Getting Input from the User and Displaying Output318
- Creating a Custom Menu320
- Creating a Table or Graph322
- Drawing on the Graph Screen324
- Accessing Another TI-89/TI-92 Plus, a CBL 2/CBL, or a CBR326
- Debugging Programs and Handling Errors327
- Example: Using Alternative Approaches328
- Assembly-Language Programs330
- Preview of Text Operations333
- Starting a Text Editor Session334
- Entering and Editing Text336
- Entering Special Characters341
- Entering and Executing a Command Script345
- Creating a Lab Report347
Chapter 18 Text Editor350
Chapter 19: Numeric Solver350
- Preview of the Numeric Solver351
- Displaying the Solver and Entering an Equation352
- Defining the Known Variables354
- Solving for the Unknown Variable356
- Graphing the Solution357
Chapter 20: Number Bases360
- Preview of Number Bases361
- Entering and Converting Number Bases362
- Performing Math Operations with Hex or bin Numbers363
- Comparing or Manipulating Bits364
Chapter 21: Memory and Variable Management366
- Preview of Memory and Variable Management367
- Checking and Resetting Memory370
- Displaying the VAR-LINK Screen372
- Manipulating Variables and Folders with VAR-LINK374
- Pasting a Variable Name to an Application376
- Archiving and Unarchiving a Variable377
- If a Garbage Collection Message Is Displayed379
- Memory Error When Accessing an Archived Variable381
Chapter 22: Linking and Upgrading383
- Linking Two Units383
- Transmitting Variables, Flash Applications, and Folders384
- Transmitting Variables under Program Control388
- Upgrading Product Software (Base Code)390
- Collecting and Transmitting ID Lists395
- Compatibility between a TI.89, TI.92 Plus, and TI.92397
- Analyzing the Pole-Corner Problem401
Chapter 22: Linking Two Units383
Chapter 23403
- Deriving the Quadratic Formula403
- Exploring a Matrix405
- Exploring Cos(X) = sin(X)406
- Finding Minimum Surface Area of a Parallelepiped407
- Running a Tutorial Script Using the Text Editor409
- Decomposing a Rational Function411
- Studying Statistics: Filtering Data by Categories413
- CBL 2/CBL Program for the TI-89 / TI-92 Plus416
- Studying the Flight of a Hit Baseball417
- Visualizing Complex Zeros of a Cubic Polynomial419
- Solving a Standard Annuity Problem421
- Computing the Time-Value-Of-Money422
- Finding Rational, Real, and Complex Factors423
- Simulation of Sampling Without Replacement424
Appendix A: Functions and Instructions426
- Alphabetical Listing of Operations431
Appendix B580
- Entering Complex Numbers580
- Accuracy Information583
- System Variables and Reserved Names584
- EOS (Equation Operating System) Hierarchy585
- Regression Formulas587
- Contour Levels and Implicit Plot Algorithm589
- Runge-Kutta Method590
- Service and Warranty Information592
- Battery Information593
Appendix C596
- In Case of Difficulty596
- Support and Service Information597
- Warranty Information598
Appendix D608
- Index608

Display size (HxV)	100 x 160 mm
Memory type	639K FLASH ROM, 188K bytes RAM
Compatible operating systems	Operating System 2.09
Battery type	AAA

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