4.7 Define & Use Sequences & Series. Vocabulary A sequence is a function whose domain is a set of...
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Transcript of 4.7 Define & Use Sequences & Series. Vocabulary A sequence is a function whose domain is a set of...
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4.7 Define & Use 4.7 Define & Use Sequences & SeriesSequences & Series
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VocabularyVocabulary A A sequencesequence is a function whose is a function whose
domain is a set of consecutive domain is a set of consecutive integers. If not specified, the integers. If not specified, the domain starts w/ 1. The values domain starts w/ 1. The values in the range are the in the range are the termsterms of the of the sequence. A finite sequence has sequence. A finite sequence has a limited number of terms and a limited number of terms and an infinite sequence continues an infinite sequence continues forever.forever.
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When you add the terms of a When you add the terms of a sequence the result is a sequence the result is a seriesseries. . Summation notationSummation notation, or , or sigma sigma notationnotation, is used to write a , is used to write a series. For example, in the series. For example, in the series , i is the index of series , i is the index of
Summation, 1 is the lower limit of Summation, 1 is the lower limit of summation and 4 is the upper summation and 4 is the upper limit of summation.limit of summation.
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ExamplesExamples
Write the 1Write the 1stst 6 terms of the 6 terms of the sequence.sequence.
aann = n - 2 = n - 2
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Describe the pattern, write the Describe the pattern, write the next term, and write a rule for next term, and write a rule for the nth term of the sequencethe nth term of the sequence
a.a. 3, 6, 9, 12, . . . 3, 6, 9, 12, . . .
b.b. 1/1, 1/3, 1/5, 1/7, . . . 1/1, 1/3, 1/5, 1/7, . . .
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Write the series using Write the series using summation notation.summation notation.
a.a. 5 + 6 + 7 + . . . + 125 + 6 + 7 + . . . + 12
b.b. 3 + 5 + 7 + . . . 3 + 5 + 7 + . . .
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Find the sum of the series.Find the sum of the series.
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4.7 Homework Change4.7 Homework Change
p. 135 1, 2, 8, 10, 18, 19, 22p. 135 1, 2, 8, 10, 18, 19, 22