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CBSE Class 12 Mathematics 2026 Main Paper 65/4/1 · Q191 Marksmatrix_multiplication

CBSE Class 12 Mathematics 2026 Main Paper 65/4/1 · Question 19 (Matrices)

Assertion: Square matrices with AB and BA defined need not satisfy AB=BA. Reason: Two diagonal matrices of the same order commute.

✅ Step-by-Step Solution

Final Answer: Both true, but the reason does not explain the assertion.
  1. General matrix multiplication need not commute. The diagonal statement is true but does not explain noncommutativity in general.

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