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Determine whether each of the following is a closed set. (a) A = [2,3] U [4,7] (b) B= (-∞, 2] U [3,5] (c) C = R \(-1, 1) (d) D= [1, 2) U [2, 4] (e) E = (1, 2) U (3, 4]

Determine whether each of the following is a closed set. (a) A = [2,3] U [4,7] (b) B= (-∞, 2] U [3,5] (c) C = R \(-1, 1) (d) D= [1, 2) U [2, 4] (e) E = (1, 2) U (3, 4]

Advanced Engineering Mathematics
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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Determine whether each of the following is a closed set. (a) A = [2,3] U [4,7] (b) B = (-∞, 2] U [3,5] (c) C = R \(-1,1) (d) D= [1,2) U [2, 4] (e) E = (1, 2) U (3, 4]
Transcribed Image Text:Determine whether each of the following is a closed set. (a) A = [2,3] U [4,7] (b) B = (-∞, 2] U [3,5] (c) C = R \(-1,1) (d) D= [1,2) U [2, 4] (e) E = (1, 2) U (3, 4]
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