What is sigma notation for a geometric series with first term #a# and common ratio #r# ?

Question

4169 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2014-09-14T13:12:25

Geometric Series
#a+ar+ar^2+ar^3+cdots=sum_{n=0}^infty ar^n=sum_{n=1}^infty ar^{n-1}#