Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 11 - Section 11.1 - Sequences and Summation Notation - Exercise Set - Page 829: 40



Work Step by Step

Since, we have $\dfrac{1}{9}+\dfrac{2}{9^2}+\dfrac{3}{9^3}+.......+\dfrac{n}{9^n}$ This can be summed up with the summation notation as: $\sum_{i=1}^{n}\dfrac{i}{9^i}$
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