Mark each statement T if the statement is always true or F if it's ever false. All A, B, C, and D are matrices, and I is the identity matrix. Do not assume anything beyond what is explicitly stated. (a) If A and B are m × n matrices, then both products AB™ and A™B are defined. (b) If C = D, then BC = BD. %3D (c) If BC = BD, then C = D. (d) Every square matrix is the product of elementary matrices. (e) If AB = I, then A is invertible. (f) For any A, det(-A) = – det A. (g) If A and B are square matrices with det A = 2 and det B = 3, then det(A + B) = 5. (h) If two rows of a square matrix A are the same, then det A = 0. (i) If det A = 5, then A is invertible and det(A¯') =. (j) If A² = 0, then A is singular.
Mark each statement T if the statement is always true or F if it's ever false. All A, B, C, and D are matrices, and I is the identity matrix. Do not assume anything beyond what is explicitly stated. (a) If A and B are m × n matrices, then both products AB™ and A™B are defined. (b) If C = D, then BC = BD. %3D (c) If BC = BD, then C = D. (d) Every square matrix is the product of elementary matrices. (e) If AB = I, then A is invertible. (f) For any A, det(-A) = – det A. (g) If A and B are square matrices with det A = 2 and det B = 3, then det(A + B) = 5. (h) If two rows of a square matrix A are the same, then det A = 0. (i) If det A = 5, then A is invertible and det(A¯') =. (j) If A² = 0, then A is singular.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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