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

20050501
Calculating the Sum of a Sequence
Perform the following steps when you want to determine the sum of a specific range of the
sequence of a recursion expression or a general term expression.
Example: To calculate the sum of the general term expression anE = n
2
+ 2n – 1 in the
range of 2 < n < 10
u ClassPad Operation
(1) Start up the Sequence Editor.
• If you have another application running, tap m and then H.
• If you have the Sequence application running, tap O and then [Sequence Editor].
(2) Tap (or press) O, [Sequence RUN], [Calc], [Σ], [n,an], [n], {, 2, +, 2, [n,an],
[n], -, 1, ,, [n,an], [n], ,, 2, ,, 1, 0, and then ).
(3) Press E.
Tip
• For information about the syntax of the “Σ” function, see “2-7 Using the Action Menu”.
6-3-6
Recursive and Explicit Form of a Sequence