Calculus: Early Transcendentals (2nd Edition)

Published by Pearson
ISBN 10: 0321947347
ISBN 13: 978-0-32194-734-5

Chapter 8 - Sequences and Infinite Series - 8.1 An Overview - 8.1 Exercises: 6

Answer

10

Work Step by Step

$$S_n = \sum_{k=1}^{n} k$$ To find first four terms, we have to evaluate the summation when $n=4$ $$S_4 = \sum_{k=1}^{4} k = 1+2+3+4 = 10$$
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