Suppose A is n x n invertible matrix ( AA-1 = I), then the first column of A-1 is orthogonal to the space spanned by: a. First row of A b. First column of A c. C(A) d. All rows of A except the first row
Suppose A is n x n invertible matrix ( AA-1 = I), then the first column of A-1 is orthogonal to the space spanned by: a. First row of A b. First column of A c. C(A) d. All rows of A except the first row
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.6: Matrices
Problem 21E: Suppose that A is an invertible matrix over and O is a zero matrix. Prove that if AX=O, then X=O.
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