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Which open interval corresponds to the open ball B(-3, 0.5)?

Which open interval corresponds to the open ball B(-3, 0.5)?

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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Which open interval corresponds to the open ball B(-3, 0.5)?
Transcribed Image Text:Which open interval corresponds to the open ball B(-3, 0.5)?
Expert Solution
Step 1

Solution:  We know that on real Line, the open balls are defined by 

B(x,∈)=x-ε,x+ε    ....(1)

where ε>0 and x∈ℝ 

 

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