Answers

2016-08-05T23:44:41+08:00
Yes. It is called Geometric Series. It has two types, Finite and Infinite

Formula for Finite Geometric Series:
S sub n = A sub 1 - (A sub 1)(r^n) all over 1 - r

where: 
S sub n = sum
A sub 1 = first term
r = common ratio ( r must not be equal to 1)

Formula for Infinite Geometric Series:
S = A sub 1 / 1 - r

where
S = sum
A sub 1 = first term
r = common ratio ( |r| < 1)
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