User Manual
Table Of Contents
- Getting Ready
- Contents
- About This User’s Guide
- Chapter 1 Getting Acquainted
- Chapter 2 Using the Main Application
- 2-1 Main Application Overview
- 2-2 Basic Calculations
- 2-3 Using the Calculation History
- 2-4 Function Calculations
- 2-5 List Calculations
- 2-6 Matrix and Vector Calculations
- 2-7 Using the Action Menu
- 2-8 Using the Interactive Menu
- 2-9 Using the Main Application in Combination with Other Applications
- 2-10 Using Verify
- Chapter 3 Using the Graph & Table Application
- Chapter 4 Using the Conics Application
- Chapter 5 Using the 3D Graph Application
- Chapter 6 Using the Sequence Application
- Chapter 7 Using the Statistics Application
- 7-1 Statistics Application Overview
- 7-2 Using List Editor
- 7-3 Before Trying to Draw a Statistical Graph
- 7-4 Graphing Single-Variable Statistical Data
- 7-5 Graphing Paired-Variable Statistical Data
- 7-6 Using the Statistical Graph Window Toolbar
- 7-7 Performing Statistical Calculations
- 7-8 Test, Confidence Interval, and Distribution Calculations
- 7-9 Tests
- 7-10 Confidence Intervals
- 7-11 Distribution
- 7-12 Statistical System Variables
- Chapter 8 Using the Geometry Application
- Chapter 9 Using the Numeric Solver Application
- Chapter 10 Using the eActivity Application
- Chapter 11 Using the Presentation Application
- Chapter 12 Using the Program Application
- Chapter 13 Using the Spreadsheet Application
- Chapter 14 Using the Setup Menu
- Chapter 15 Configuring System Settings
- 15-1 System Setting Overview
- 15-2 Managing Memory Usage
- 15-3 Using the Reset Dialog Box
- 15-4 Initializing Your ClassPad
- 15-5 Adjusting Display Contrast
- 15-6 Configuring Power Properties
- 15-7 Specifying the Display Language
- 15-8 Specifying the Font Set
- 15-9 Specifying the Alphabetic Keyboard Arrangement
- 15-10 Optimizing “Flash ROM”
- 15-11 Specifying the Ending Screen Image
- 15-12 Adjusting Touch Panel Alignment
- 15-13 Viewing Version Information
- Chapter 16 Performing Data Communication
- Appendix

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Using the Action Menu
uu
uu
u LU
Function: Returns the LU decomposition of a square matrix.
Syntax: LU (Mat, lVariableMem, uVariableMem [
)
]
Example: To obtain the LU decomposition of the matrix [[1,2,3] [4,5,6] [7,8,9]]
• The lower matrix is assigned to the first variable L, while the upper matrix is assigned to
the second variable U.
Menu Item: [Action][Matrix-Calculation][LU]
To display the lower matrix
Menu Item: [VAR][CAP][L][EXE]
To display the upper matrix
Menu Item: [VAR][CAP][U][EXE]
uu
uu
u QR
Function: Returns the QR decomposition of a square matrix.
Syntax: QR (Mat, qVariableMem, rVariableMem [
)
]
Example: To obtain the QR decomposition of the matrix [[1, 2] [3, 4]]
• The unitary matrix is assigned to variable Q, while the upper triangular matrix is
assigned to variable R.
Menu Item: [Action][Matrix-Calculation][QR]
To display the unitary matrix
Menu Item: [VAR][CAP][Q][EXE]