Asked by Alex
What is the sum of the infinite geometric series 15 + 15(1/3)+ 15(1/3)^2 + 15(1/3)^3?
Answers
Answered by
Steve
since
a = 15
r = 1/3
S4 = a(1-r^4)/(1-r)
= 200/9
as you can easily verify with any calculator
a = 15
r = 1/3
S4 = a(1-r^4)/(1-r)
= 200/9
as you can easily verify with any calculator
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