Which of the following subsets of RX3 are subspaces of R³x3

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter6: Linear Systems
Section6.3: Matrix Algebra
Problem 79E
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Which of the following subsets of R3X3
are
subspaces of R³×3?
A. The diagonal 3 x 3 matrices
B. The 3 × 3 matrices with trace 0 (the trace of a
matrix is the sum of its diagonal entries)
C. The non-invertible 3 × 3 matrices
D. The 3 x 3 matrices whose entries are all greater
than or equal to 0
E. The invertible 3 × 3 matrices
F. The 3 x 3 matrices A such that A
6.
Transcribed Image Text:Which of the following subsets of R3X3 are subspaces of R³×3? A. The diagonal 3 x 3 matrices B. The 3 × 3 matrices with trace 0 (the trace of a matrix is the sum of its diagonal entries) C. The non-invertible 3 × 3 matrices D. The 3 x 3 matrices whose entries are all greater than or equal to 0 E. The invertible 3 × 3 matrices F. The 3 x 3 matrices A such that A 6.
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