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Get Full Access to A Transition To Advanced Mathematics - 7 Edition - Chapter 5.3 - Problem 14
Get Full Access to A Transition To Advanced Mathematics - 7 Edition - Chapter 5.3 - Problem 14

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# Let A be a denumerable set. Prove that(a) the set of all 1-element subsets of A

ISBN: 9780495562023 335

## Solution for problem 14 Chapter 5.3

A Transition to Advanced Mathematics | 7th Edition

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A Transition to Advanced Mathematics | 7th Edition

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Problem 14

Let A be a denumerable set. Prove that(a) the set of all 1-element subsets of A isdenumerable.(b) the set of all 2-element subsets of A isdenumerable.(c) for every is denumerable.(d) the set of all finite subsets of A is denumerable.(Hint: Use Theorem 5.3.8.)

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Now You Try It (NYTI): x − 2x − 3 1. Let f(x)= 2 . x − 1 (a) Evaluate each limit below. m i l ) i (i) limi− f(x) ( + f(x). x→−1 x→1 (b) Find and describe/classify each discontinuity of f(x). (c) Can you deﬁne f(x)t omaeitnnuusthevu()undnpat (b) If it’s not possible, state why. 2. Show that the equation cos(x)= x has at least one real root on the interval (0,1).

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