College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 8 - Summary, Review, and Test - Review Exercises - Page 788: 9



Work Step by Step

$\sum_{i=0}^{4} ((-1)^{i+1}i!)=((-1)^{0+1}0!)+((-1)^{1+1}1!)+((-1)^{2+1}2!)+((-1)^{3+1}3!)+((-1)^{4+1}4!)=(-1\cdot1)+(1\cdot1)+(-1\cdot2)+(1\cdot6)+(-1\cdot24)=-1+1-2+6-24=-20$
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.