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Homework Statement
Determine whether the series is convergent or divergent. Find the sum if possible
Ʃ 1+2^n / 3^n n=1 -> infinity
Homework Equations
a/1-r
The Attempt at a Solution
I split it up so that the equation is now:
Ʃ (1/3^n) + (2/3)^n n=1 -> infinity
Ʃ (1/3^n) + Ʃ (2/3)^n n=1 -> infinity
I know that it is convergent in the second term because 2/3 < 1, how do I setup a/1-r for term 1? :S
a1=1/3 a1 = 2/3
(1/3)/(1-(1/3)) + (2/3)/(1-(2/3))
=5/2
The answer should be 3/2 on the answer sheet it says ?