Write True if the statement is true. If the statement is false, explain briefly why it is so. (a) Suppose the infinite series an is divergent. Then for any constant c, the series n=1 Σ can is also divergent. n=1 (b) Let sn = a1i+ + an. If lim sn n→+∞ 0, then the series an is convergent. ... n=1 (c) Given the alternating series E(-1)"an. If an is increasing or lim an #0 then the n→+∞ n=1 given series is divergent

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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Write True if the statement is true. If the statement is false, explain briefly why it is so.
(a) Suppose the infinite series > an is divergent. Then for any constant c, the series
Σ
n=1
can is also divergent.
n=1
(b) Let sn = ai +... + an. If lim sn = 0, then the series > an is convergent.
n→+∞
n=1
(c) Given the alternating series > (-1)"an. If an is increasing or lim an #0 then the
n→+o
n=1
given series is divergent.
Transcribed Image Text:Write True if the statement is true. If the statement is false, explain briefly why it is so. (a) Suppose the infinite series > an is divergent. Then for any constant c, the series Σ n=1 can is also divergent. n=1 (b) Let sn = ai +... + an. If lim sn = 0, then the series > an is convergent. n→+∞ n=1 (c) Given the alternating series > (-1)"an. If an is increasing or lim an #0 then the n→+o n=1 given series is divergent.
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