Calculus 8th Edition

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

Appendix E - Sigma Notation - E Exercises - Page A38: 6



Work Step by Step

We expand the sigma notation by writing $x^{k}$ as $k$ increases from 5 to 8: $\displaystyle \sum_{k=5}^{8}x^{k}=x^{5}+x^{6}+x^{7}+x^{8}$
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