Let (x, y) and (z, w) be two points in R? state which of the following does not define metric on R? ? 1-d(x,y),(z,w))=min(|x-zl,|y-w|) 2- d(x,y),(z,w))=(x-z)²+(y-w)² 3- d((x,y),(z,w))=|x|+|y|+|z|+|w|

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section: Chapter Questions
Problem 39RE
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Let (x, y) and (z, w) be two points in R? state
which of the following does not define metric on
R2 ?
1-d((x,y),(z,w))=min(|x-zl,ly-w|)
2- d((x,y),(z,w))=(x-z)²+(y-w)²
3- d((x,y),(z,w))=|x|+|y|+|z|+|w|
Transcribed Image Text:Let (x, y) and (z, w) be two points in R? state which of the following does not define metric on R2 ? 1-d((x,y),(z,w))=min(|x-zl,ly-w|) 2- d((x,y),(z,w))=(x-z)²+(y-w)² 3- d((x,y),(z,w))=|x|+|y|+|z|+|w|
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