10. Which of the following statements is /are not true? I. Every convergent sequence is Cauchy. II. Every bounded sequence is convergent. III. Every Cauchy sequence is convergent. A. I only В. I only C. I and III only D. I, II and III E. None of the above choices A, B,C or D
10. Which of the following statements is /are not true? I. Every convergent sequence is Cauchy. II. Every bounded sequence is convergent. III. Every Cauchy sequence is convergent. A. I only В. I only C. I and III only D. I, II and III E. None of the above choices A, B,C or D
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![10. Which of the following statements is /are not true?
I. Every convergent sequence is Cauchy.
II. Every bounded sequence is convergent.
III. Every Cauchy sequence is convergent.
A. I only
В. I only
C. II and III only
D. I, II and III
E. None of the above choices A, B,C or D
Let an be a sequence of real numbers such that an+1 2 an, Vn 2 1 and a, + a as
n → 0o. Use this preamble to answer questions 11 and 12
11. Which of these statements best describe(s) an as a Cauchy sequence?
I. for any given e > 0,3 n(ɛ) ER 3|an - a |< e Vn 2 n(e).
II. for any given e > 0,| an – Am |< € V m, n > N, for some NER
III. | an – am +0 as m,n +0
A I and II only
B. I and III only
С. I only
D. III only
E. None of the above choices A, B,C or D
12. Which of the choices below give(s) the best definition of convergence of a,?
I. for any given e > 0,3 n(ɛ) E R Ə|an – a |< e Vn 2 n(e).
II. for any given e > 0,3 n(e) E R =|, – am |< e Vn 2 n(e).
III. for any give e > 0, 3 n(e) ER 3 a- e< an < a+e Vn 2 n(e).
A. I only
B. I and III only
С. I only
D. I, II and III
E. None of the above choices A, B,C or D
Let z1 = 1 and r,n+1 = VIn +2, V n 2 1. Let P, : Tn+1 > In V n e N, be a
statement that is either true or false. Use this preamble to answer questions 13,14,
15 and 16.
13. To prove that P, is true for all n eN, which of the following do you consider as the
base step?
A. 12 < #1
B. 3 >1
C. Ik+1 > Ik-
D. Ik+2 > k+1
E. None of the above.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F009686d1-d313-4744-8103-57d5cc036323%2F9a150304-16a7-4786-a889-89b3e60955bc%2Ftl8tc51_processed.jpeg&w=3840&q=75)
Transcribed Image Text:10. Which of the following statements is /are not true?
I. Every convergent sequence is Cauchy.
II. Every bounded sequence is convergent.
III. Every Cauchy sequence is convergent.
A. I only
В. I only
C. II and III only
D. I, II and III
E. None of the above choices A, B,C or D
Let an be a sequence of real numbers such that an+1 2 an, Vn 2 1 and a, + a as
n → 0o. Use this preamble to answer questions 11 and 12
11. Which of these statements best describe(s) an as a Cauchy sequence?
I. for any given e > 0,3 n(ɛ) ER 3|an - a |< e Vn 2 n(e).
II. for any given e > 0,| an – Am |< € V m, n > N, for some NER
III. | an – am +0 as m,n +0
A I and II only
B. I and III only
С. I only
D. III only
E. None of the above choices A, B,C or D
12. Which of the choices below give(s) the best definition of convergence of a,?
I. for any given e > 0,3 n(ɛ) E R Ə|an – a |< e Vn 2 n(e).
II. for any given e > 0,3 n(e) E R =|, – am |< e Vn 2 n(e).
III. for any give e > 0, 3 n(e) ER 3 a- e< an < a+e Vn 2 n(e).
A. I only
B. I and III only
С. I only
D. I, II and III
E. None of the above choices A, B,C or D
Let z1 = 1 and r,n+1 = VIn +2, V n 2 1. Let P, : Tn+1 > In V n e N, be a
statement that is either true or false. Use this preamble to answer questions 13,14,
15 and 16.
13. To prove that P, is true for all n eN, which of the following do you consider as the
base step?
A. 12 < #1
B. 3 >1
C. Ik+1 > Ik-
D. Ik+2 > k+1
E. None of the above.
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