= (k₁) be an m x n matrix with scalar entries. For x € K", let Mx € K™ be defined as n Mx(i) = Σkjj x(j), i = 1, ... m. j=1 Prove that the map x → Mx is a linear map of K to Km.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.4: Orthogonal Diagonalization Of Symmetric Matrices
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Let M = (k₁) be an m x n matrix with scalar entries. For x € K", let Mx € Km
be defined as
n
Mx(i) = Σk₁j x(j), i = 1, … m.
...
j=
Prove that the map x → Mx is a linear map of K" to K™.
Transcribed Image Text:Let M = (k₁) be an m x n matrix with scalar entries. For x € K", let Mx € Km be defined as n Mx(i) = Σk₁j x(j), i = 1, … m. ... j= Prove that the map x → Mx is a linear map of K" to K™.
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