CUET · MATHS · PYQ PAPER 2023
If A is a square matrix of order 3, B = kA and |B| = x|A| then,
- A x = 2k
- B \(x=k^2\)
- C \(x=k^3\)
- D x = 3k
Answer & Solution
Correct Answer
(C) \(x=k^3\)
Step-by-step Solution
Detailed explanation
\(|kA| = k^n|A|\) \(|B| = k^3|A|\) \(x|A| = k^3|A|\) \(x = k^3\)
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