Suppose a, and b, are series with only positive terms and b, is known to be n=1 n= 1 n = 1 convergent. If a, > b, for all n, what can you say about a,? Why? n = 1 We cannot say anything about 2an. n = 1 8. Z a, converges if and only if n = 1 Σ an s 2 a, converges by the Direct Comparison Test. an n = 1 2 a, diverges if and only if an > bn for some n. n = 1 8. 2 a, diverges by the Direct Comparison Test. in n = 1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 68E
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Suppose ∑ an & ∑ bn are series with only positive terms and ∑ bn is known to be convergent. If an>bn for all n, what can you say about ∑ an? Why? *Choose the correct multiple choice and explain why*
Suppose a, and b, are series with only positive terms and b, is known to be
n=1
n= 1
n = 1
convergent.
8,
If a, > bn for all n, what can you say about 2 a,? Why?
n = 1
We cannot say anything about 2a,.
n = 1
Z a, converges if and only if
an s
in
n = 1
2 a, converges by the Direct Comparison Test.
in
n = 1
2 a, diverges if and only if an > bn for some n.
n = 1
2a, diverges by the Direct Comparison Test.
n = 1
Transcribed Image Text:Suppose a, and b, are series with only positive terms and b, is known to be n=1 n= 1 n = 1 convergent. 8, If a, > bn for all n, what can you say about 2 a,? Why? n = 1 We cannot say anything about 2a,. n = 1 Z a, converges if and only if an s in n = 1 2 a, converges by the Direct Comparison Test. in n = 1 2 a, diverges if and only if an > bn for some n. n = 1 2a, diverges by the Direct Comparison Test. n = 1
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