Write a rule for the nth term of the geometric series.
a2 = ­24, a5 = 1536
1
12.2 Analyze Arithmetic
Series ­ Day 2
Summation (sigma) notation ­
Mathematical notation that compactly represents summation of many similar terms
Find the sum of the arithmetic series
A)
B)
The sum of the first n terms of a finite (there's an end) arithmetic series is:
The sum of the series = (# of terms)(average value of each term)
For sigma notation: n = (top # ­ bottom #) + 1
Find the sum of the arithmetic series
A)
B)
C) 1, 7, 13,...121, 127 (n = 22)
2
12.3 Analyze Geometric
Series ­ Day 2
The sum of the first n terms of a geometric series with a common ratio r 1 is:
Find the sum of the geometric series
A)
B)
3
Homework
p807 40­48 all
p815 48­54 all
4