1.1 Let (S, d) be a discrete metric space and p E S. Identify (i) S1(p), (ii) S2(p).1.2 Let R? have the usual metric d(x, y) =Sketch (i) S1(1, 1), (ii) S1[(0,0)].(71 — У1)2 + (, — У2)2.1.3 Classify each of the following sets in (R, d) ,where d is the usual metric on R, as open,closed, neither or both.1.3.1 {, n e N}1.3.2 N1.3.3 Q1.3.4 n (0, -)

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Answered: 1.1 Let (S, d) be a discrete metric…

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1.1 Let (S, d) be a discrete metric space and p e S. Identify (i) S1(p), (ii) S2(p).

Advanced Engineering Mathematics

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ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

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Question

1.1 Let (S, d) be a discrete metric space and p E S. Identify (i) S1(p), (ii) S2(p).
1.2 Let R? have the usual metric d(x, y) =
Sketch (i) S1(1, 1), (ii) S1[(0,0)].
(71 — У1)2 + (, — У2)2.
1.3 Classify each of the following sets in (R, d) ,where d is the usual metric on R, as open,
closed, neither or both.
1.3.1 {, n e N}
1.3.2 N
1.3.3 Q
1.3.4 n (0, -)

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