Let 2= R, and suppose S₁ consists of intervals including Ø, the empty Ω set: S₁ = {(a,b]: -∞

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
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Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
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(a) Let S = R, and suppose S₁ consists of intervals including Ø, the empty
set:
S₁ = {(a, b]: -∞0 ≤a ≤ b ≤∞0}.
If I₁, I2 € S₁, then I₁12 is an interval and in S₁ and if I € S₁, then Iº is a
union of disjoint intervals.
0
1
Transcribed Image Text:(a) Let S = R, and suppose S₁ consists of intervals including Ø, the empty set: S₁ = {(a, b]: -∞0 ≤a ≤ b ≤∞0}. If I₁, I2 € S₁, then I₁12 is an interval and in S₁ and if I € S₁, then Iº is a union of disjoint intervals. 0 1
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