Please mark all true statements (there might be more than one statement that is true)
Please mark all true statements (there might be more than one statement that is true)
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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Transcribed Image Text:Please mark all true statements (there might be more than one statement that is true).
Let A CR be finite then A is an open subset of R.
○ The set A = {x² + 2x + 1: x € R} is an open subset of R.
Let A CR be infinite then A is an open subset of R.
t D ( x₁₁² ) = {x € R:
Intersection of open sets open.
Let D(x
x € R: x-x|<ɛ}. A subset AC R is open if for all x EA there is & > 0, such that tD (x₂ε) ≤A.
0
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