One common place where you use ∞ is as an endpoint of an interval. WeBWork allows you to enter intervals using standard interval notation, including infinite endpoints. For example, [-2,5) represents an interval that is closed on the left and open on the right, while [2, inf) is an interval that extends infinitely to the right. Write the interval of points that are less than 5: Several intervals can be combined into one region using the "set union" operation, U, which is represented as "U" in WeBWork. For example, [-2,0] U (8, inf) represents the points from -2 to 0 together with everything bigger than 8. Write the set of points from -6 to -1 but excluding -3 and -1 as a union of intervals:
One common place where you use ∞ is as an endpoint of an interval. WeBWork allows you to enter intervals using standard interval notation, including infinite endpoints. For example, [-2,5) represents an interval that is closed on the left and open on the right, while [2, inf) is an interval that extends infinitely to the right. Write the interval of points that are less than 5: Several intervals can be combined into one region using the "set union" operation, U, which is represented as "U" in WeBWork. For example, [-2,0] U (8, inf) represents the points from -2 to 0 together with everything bigger than 8. Write the set of points from -6 to -1 but excluding -3 and -1 as a union of intervals:
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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![One common place where you use ∞ is as an endpoint of an interval. WeBWork allows you to enter intervals using standard interval notation, including
infinite endpoints. For example, [-2,5) represents an interval that is closed on the left and open on the right, while [2, inf) is an interval that extends
infinitely to the right.
Write the interval of points that are less than 5:
Several intervals can be combined into one region using the "set union" operation, U, which is represented as "U" in WeBWork. For example,
[-2,0] U (8, inf) represents the points from -2 to 0 together with everything bigger than 8.
Write the set of points from -6 to -1 but excluding −3 and −1 as a union of intervals: |](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffbee182a-544b-4a35-ae8e-c9ecfc559983%2F7757b20c-5ba3-4b72-8af2-6e6eaaa7a5b3%2Fwfohom_processed.png&w=3840&q=75)
Transcribed Image Text:One common place where you use ∞ is as an endpoint of an interval. WeBWork allows you to enter intervals using standard interval notation, including
infinite endpoints. For example, [-2,5) represents an interval that is closed on the left and open on the right, while [2, inf) is an interval that extends
infinitely to the right.
Write the interval of points that are less than 5:
Several intervals can be combined into one region using the "set union" operation, U, which is represented as "U" in WeBWork. For example,
[-2,0] U (8, inf) represents the points from -2 to 0 together with everything bigger than 8.
Write the set of points from -6 to -1 but excluding −3 and −1 as a union of intervals: |
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