(a) (-1, 1) U (10, 11) (b) (-∞, 1] Please include interval notation
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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Question
Classify each of the following subsets of R as open, closed, neither, or both. Justify your answer.
(a) (-1, 1) U (10, 11)
(b) (-∞, 1]
Please include interval notation (with a line) for (a) and (b). Thanks!
Expert Solution
Step 1: What we do
We have justify the given subset with line.
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