3. Arithmetic Series
A series is the expression for the SUM of
the terms in a sequence.
Finite sequences and series have terms
you can count individually from 1 to a
final whole number, n.
Infinite sequences and series continue
without end. (infinity)
6. An arithmetic series is a series whose
terms form an arithmetic sequence.
Sum of a Finite Arithmetic Series:
a1: 1st
term
an: nth term
n: number of terms
)(
2
1 nn aa
n
S +=