Matrices
NCERT Class 12
CBSE
Grade 12
Question:
Matrix $A = \begin{bmatrix} 0 & -5 & 8 \\ 5 & 0 & 12 \\ -8 & -12 & 0 \end{bmatrix}$ is a:
(a) Skew-symmetric matrix
(b) Symmetric matrix
(c) Diagonal matrix
(d) Scalar matrix
Step-by-Step Solution
$A' = -A \Rightarrow$ Skew-symmetric matrix. [1.0 Mark]
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🎯 Official CBSE Marking Scheme:
Selecting Skew-symmetric matrix: 1.0 Mark
Correct Answer: Skew-symmetric matrix
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