Let x, y and z be real numbers. Show that the distance between a real number x and y is the sum of the distances between x and y and between y and z if and only if y ∈ [x, z]. Illustrate geometrically on the real line
Let x, y and z be real numbers. Show that the distance between a real number x and y is the sum of the distances between x and y and between y and z if and only if y ∈ [x, z]. Illustrate geometrically on the real line
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.2: Graphs Of Equations
Problem 62E
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Let x, y and z be real numbers. Show that the distance between a real number x and y is the sum of the distances
between x and y and between y and z if and only if y ∈ [x, z]. Illustrate geometrically on the real line.
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