For X = (x₁,...,xn), Y = (y₁, ..., Yn) € Rn, define n d(X,Y) := Σ |xi - vi| i=1 (a). Show that d is a metric on R". (b). Let de be the Euclidean metric on Rn. Find positive real numbers a, ß such that adE (X, Y) ≤d(X, Y) ≤ BdE (X, Y)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
Problem 33E
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3. For X = (x1,...,xn), Y = (y₁, ..., Yn) E Rn, define
n
d(X, Y) := Σ |xi — Yi|
i=1
(a). Show that d is a metric on R".
(b). Let dE be the Euclidean metric on R". Find positive real numbers a, B such that
ade (X, Y) ≤ d(X, Y) ≤ ßdɛ(X, Y)
for any X, YER".
Transcribed Image Text:3. For X = (x1,...,xn), Y = (y₁, ..., Yn) E Rn, define n d(X, Y) := Σ |xi — Yi| i=1 (a). Show that d is a metric on R". (b). Let dE be the Euclidean metric on R". Find positive real numbers a, B such that ade (X, Y) ≤ d(X, Y) ≤ ßdɛ(X, Y) for any X, YER".
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