Answer
$$\sum_{i=4}^{8}i^7 $$
Work Step by Step
Given $$ 4^{7}+5^{7}+6^{7}+7^{7}+8^{7}$$
Since every term has the same power of $7$ and we begin with $4$, with increments of $1$, then
$$4^{7}+5^{7}+6^{7}+7^{7}+8^{7}=\sum_{i=4}^{8}i^7 $$
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 5 - The Integral - 5.1 Approximating and Computing Area - Exercises - Page 235: 23
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