Class 12 Matrices · Mcq Single Correct1 Marksmatrix_operations
Class 12 Maths · Matrices · Mcq Single Correct #71
For real a,b, find \(\begin{bmatrix}a & b\\−b & a\end{bmatrix}\)\(\begin{bmatrix}a & −b\\b & a\end{bmatrix}\).
✅ Step-by-Step Solution
Final Answer: Option (A): \(\begin{bmatrix}a²+b² & 0\\0 & a²+b²\end{bmatrix}\)
- The diagonal entries are a²+b², and each off-diagonal entry is −ab+ab=0.
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