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: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter8: Introduction To Functions
Section8.7: Functions Defined By Equations
Problem 47WE
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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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