Consider the series E an, and denote by b. = a4k-3+a4k-2+a4k-1+ a4k for k > 1. Assume that an >0 for all n, and E bk is convergent. Prove that E. and E an =Ex=1 bk• An is convergent

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.4: Applications
Problem 22EQ: 22. The networks in parts (a) and (b) of Figure 2.23 show two resistors coupled in series and in...
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Consider the series E, an, and denote by br
= a4k–3+a4k–2+a4k-1+a4k for
n=1
k > 1. Assume that an >0 for all n, and E br is convergent. Prove that E, am is convergent
n=1
and En-1 an
Σ α Σ bμ
n=1
k=1
Transcribed Image Text:Consider the series E, an, and denote by br = a4k–3+a4k–2+a4k-1+a4k for n=1 k > 1. Assume that an >0 for all n, and E br is convergent. Prove that E, am is convergent n=1 and En-1 an Σ α Σ bμ n=1 k=1
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