Day 1 Arithmetic Sequences and Series
December 17, 2014
Day 1 Arithmetic Sequences and Series
Objective: Finding terms and equations of arithmetic sequences, arithmetic means, arithmetic series
Thinking Skill: Explicitly assess information and draw conclusions
Warm­up: Factor 1
Day 1 Arithmetic Sequences and Series
December 17, 2014
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Day 1 Arithmetic Sequences and Series
December 17, 2014
If I know 27 and 60 are terms of an arithmetic sequence and there are two terms in between, how can we find the two terms?
Write a sequence that has 6 arithmetic means between ­12 and 23
An arithmetic series is the indicated sum of the terms of an arithmetic sequence.
Sn is the sum of the first n terms or the nth partial sum
for ­9, ­3, 3, 9, 15, ...
S3 = S5 = Formula
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Day 1 Arithmetic Sequences and Series
Formula
December 17, 2014
For the series ­19 ­ 13 ­ 7 ­ ...
find the sum of the first 26 terms.
so find S60 for 9, 14, 19, ...
Find n for a series for which a1 = ­7, d = 1.5 and Sn = ­14
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