Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Appendix E - Sigma Notation - E Exercises - Page A38: 19



Work Step by Step

We contract the sum into sigma notation by noting that it follows the pattern of a sum of powers of $x$ (e.g. $x^i$), starting with $x$ (e.g. $i=1$) and ending with $x^n$ (e.g. $i=n$): $x+x^{2}+x^{3}+\displaystyle \cdots+x^{n}=\sum_{i=1}^{n}x^{i}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.