Assume the nth partial sum of a series a, is given by the following: n = 1 9n - 4 Sn 2n + 4 (a) Find a 1. a = 6. (b) Find an for n > 1. a 6 (c) Find an n = 1 %3D an n = 1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.3: Geometric Sequences
Problem 50E
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Assume the nth partial sum of a series a, is given by the following:
n = 1
9n - 4
Sn
%3D
2n + 4
(a) Find a1·
a 1
%3D
6.
(b) Find a, for n > 1.
an
6.
12
(c) Find
an
n = 1
Σ
a,
n = 1
Transcribed Image Text:Assume the nth partial sum of a series a, is given by the following: n = 1 9n - 4 Sn %3D 2n + 4 (a) Find a1· a 1 %3D 6. (b) Find a, for n > 1. an 6. 12 (c) Find an n = 1 Σ a, n = 1
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