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If A is an m × n matrix of rank r, what are the dimensions of N(A) and N(AT )? Explain.

If A is an m × n matrix of rank r, what are the dimensions of N(A) and N(AT )? Explain.

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter6: Matrices And Determinants
Section: Chapter Questions
Problem 1CC
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If A is an m × n matrix of rank r, what are the
dimensions of N(A) and N(AT )? Explain.

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