Let B = Qn (0, 1) be a subset of R. Consider a function f: N→ B defined by f(n) = an, where an = 1-n n+1' nEN. a) Explain whether f is a bijection. (Note: Both injectivity and surjectivity must be discussed.) ) Prove that the sequence {an} is convergent by the Monotone Convergence The- orem. :) Explain whether the series 1 an is convergent. (Note: The name of the test used must be included.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.1: Infinite Sequences And Summation Notation
Problem 72E
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Let B = Qn (0, 1) be a subset of R. Consider a function f: N→ B defined by
f(n) =
= an where an =
1-n
n+1'
nEN.
a) Explain whether f is a bijection. (Note: Both injectivity and surjectivity must
be discussed.)
) Prove that the sequence {an} is convergent by the Monotone Convergence The-
orem.
:) Explain whether the series 1 an is convergent. (Note: The name of the test
used must be included.)
Transcribed Image Text:Let B = Qn (0, 1) be a subset of R. Consider a function f: N→ B defined by f(n) = = an where an = 1-n n+1' nEN. a) Explain whether f is a bijection. (Note: Both injectivity and surjectivity must be discussed.) ) Prove that the sequence {an} is convergent by the Monotone Convergence The- orem. :) Explain whether the series 1 an is convergent. (Note: The name of the test used must be included.)
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