Series Sum

Question

+1

648

1

+49

Evaluate the Series $\dfrac{1}{3^1}+\dfrac{4}{3^2}+\dfrac{7}{3^3}+\dfrac{10}{3^4}+\cdots$

Yoink Feb 3, 2019

+2

Best Answer

sumfor(n, 0, infinity, (3*n+1) / (3^(n+1)) = 5/4 = 1 1/4

Guest Feb 3, 2019

Guest · Answer 1 · 2019-02-03T05:28:26

sumfor(n, 0, infinity, (3*n+1) / (3^(n+1)) = 5/4 = 1 1/4