April 18, 2016
• the indicated sum of the terms of a sequence
Sequence
3, 6, 9, 12, 15
Series
3 + 6 + 9 + 12 + 15
can be represented by using the Greek letter Ʃ
5
Ʃ
(2n)
n = 1
"The sum as n goes from 1 to 5 of 2n"
1
April 18, 2016
2
April 18, 2016
the sum of the terms of an arithmetic sequence
Sn is the sum of the first n terms of a sequence
n
Sn = (a1 + an)
2
3
April 18, 2016
4