May 2014
Beginner
312 pages
7h 21m
English
Content preview from Algebra II Workbook For Dummies, 2nd Edition
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Chapter 15
Going Out of Sequence with Sequences and Series
In This Chapter
Working with sequences and their terms
Recognizing arithmetic and geometric patterns
Examining recursive sequences: Going back two or more terms
Summing up the terms in a sequence with a series
A sequence is a list of items all separated by commas (milk, sugar, eggs … okay, so it’s generally a list of numbers). Mathematical sequences usually have a rule determining what number comes in which position in the list. A series is the sum of the numbers in a sequence — or that list. You add up a few or many or all the terms in a sequence.
In this chapter, you see arithmetic and geometric sequences — some of the more commonly used sequences. You also form many other types of sequences by just writing a rule using various mathematical operations. Finally, you figure out how to add the terms in a sequence using rules that apply to series.
Writing the Terms of a Sequence
The sequence 1, 3, 5, 7, 9, … consists of the odd positive integers. Notice that I stop listing the numbers at 9, hoping that you can determine the ...
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