Let the matrices A7x7, B2xa, C7xs and Dyx9 be given. Which of the following statement or state- ments are correct? 1. For i < j let aj = 0. A = [a,] is invertible if and only if a +0. II. The rank of the matrix BC is at most 7. I. The matrix D = [dj] = [P -f] is anti-symmetric. IV. The multiplication AC is well-defined. (a) I, III and IV (b) Il and IV (c) I and III (d) IV and V (e) All of them
Let the matrices A7x7, B2xa, C7xs and Dyx9 be given. Which of the following statement or state- ments are correct? 1. For i < j let aj = 0. A = [a,] is invertible if and only if a +0. II. The rank of the matrix BC is at most 7. I. The matrix D = [dj] = [P -f] is anti-symmetric. IV. The multiplication AC is well-defined. (a) I, III and IV (b) Il and IV (c) I and III (d) IV and V (e) All of them
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter4: Vector Spaces
Section4.6: Rank Of A Matrix And Systems Of Linear Equations
Problem 77E: Let A and B be square matrices of order n satisfying, Ax=Bx for all x in all Rn. a Find the rank and...
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