How do you find the sum of the infinite geometric series 1/3+1/9+1/27+1/81+...?
1 Answer
Dec 9, 2015
Explanation:
Formula for sum of infinite geometric series is
We have a geometric series :
First we know
Second: Identify
Substitute into the formula
#= (1/3) /(2/3) #
#=(1/3)*(3/2)#
#Soo= 1/2#