1. By using the standard metroie X. Determine JA and X\A. Justify your answer. State whether A is open in X, closed in X, both open and closed in X, X, when: ,or neither open nor closed メ, in (い) X = IR OA = [-1, 11
1. By using the standard metroie X. Determine JA and X\A. Justify your answer. State whether A is open in X, closed in X, both open and closed in X, X, when: ,or neither open nor closed メ, in (い) X = IR OA = [-1, 11
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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![1. By using
the
standard
metroic
X.
on
Determine
SA and X\A. Justi fy
your
answer.
State whether A is
open in X, closed
in X,
both
open and c losed in X, or neither
open
nor
closed
X, when:
in
kis
X = IR
O A = [-1, 11
® A=(-∞, -3] U[2,00)
OA = 2,4,6,8,103
%3D
,O A = { x E IR°: den, os > 23
® A = {(1, 2), (~2, 5) }
%3D
ccüi) X = 10,13
A s C,= { al seguences that starts
with 1 3.
X = C [0,13,
A = Ef c C[0,1]: frļ>>13
(V)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fead15ed3-ba6a-41c2-9d2a-a187cc2ccb25%2F2d4e8d0a-d0b3-4baf-b5c5-6f83dd2b95ab%2Fauc2b4s_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. By using
the
standard
metroic
X.
on
Determine
SA and X\A. Justi fy
your
answer.
State whether A is
open in X, closed
in X,
both
open and c losed in X, or neither
open
nor
closed
X, when:
in
kis
X = IR
O A = [-1, 11
® A=(-∞, -3] U[2,00)
OA = 2,4,6,8,103
%3D
,O A = { x E IR°: den, os > 23
® A = {(1, 2), (~2, 5) }
%3D
ccüi) X = 10,13
A s C,= { al seguences that starts
with 1 3.
X = C [0,13,
A = Ef c C[0,1]: frļ>>13
(V)
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