   Chapter 13.2, Problem 51E ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742

#### Solutions

Chapter
Section ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742
Textbook Problem

# 51-56 Partial Sum of an Arithmetic Sequence Find the partial sum S n of the arithmetic sequence that satisfies the given conditions. a = 3 , d = 5 , n = 20

To determine

The partial sum of the arithmetic sequence that have a=3, d=5 and n=20.

Explanation

Approach:

The partial sum of an arithmetic sequence is given as,

Sn=n2[2a+(n1)d]...(1)

Here, Sn is the partial sum of n terms, n is the number of terms, a is the first term of the sequence and d is the common difference of the sequence.

Calculation:

Substitute 3 for a, 20 for n, and 5 for d in equation (1), to calculate Sn

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