Answer
$\sum_{i=1}^{n}\dfrac{i}{9^i}$
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:
$\sum_{i=1}^{n}\dfrac{i}{9^i}$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
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
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
