4. The dimension of space of all 7-by-7 skew-symmetric real matrices has a dimension (a) 28 (b) 21 (c) 10 (d) 6
4. The dimension of space of all 7-by-7 skew-symmetric real matrices has a dimension (a) 28 (b) 21 (c) 10 (d) 6
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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Number 4 only, please choose the letter of the correct answer
Transcribed Image Text:4. The dimension of space of all 7-by-7 skew-symmetric real matrices has a dimension
(a) 28
(b) 21
(c) 10
(d) 6
5. Let W₁
equal to
(a) 0
=
and W₂
<>--<>
=
(b) 1
be subspaces of R³. Then dim(W₁ W₂) is
(c) 2
(d) 3
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