When is a matrix A skew-symmetric?
- A = Aᵀ
- A = –Aᵀ
- A + Aᵀ = I
- None of these
Explanation
A square matrix, A , is skew-symmetric if it is equal to the negation of its nonconjugate transpose, A = -A. ' . a i , j = − a j , i . is both skew-symmetric and skew-Hermitian.
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- 2.5
- 3.5
- 4.5
- None of these
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- 2x + 2
- 2x - 8
- 2x - 5
- None of these
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- 2x² + 4 = 9x
- 2x² + 9 = 4x
- 2x² + 9 = 4x
- x² + 4 = 9x
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