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Algebra & Trigonometry with Analytic Geometry

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter9: Systems Of Equations And Inequalities

Section9.4: Linear Programming

Problem 8E

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Solve subparts (1) and (3)

Let A and B be any two subsets of a metric space (X, d). Then
(1) A is a closed set.
obsu
(2) If ACB, then AC B.
(3) A is the smallest closed superset of A.
(4) A = A if and only if A is closed.
(5) A is the intersection of all closed sets containing A.
(6) AUB = ĀUB
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(7) ANBCA OB

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