Question

If |A| = 4 then |3A| = ?, where A is 3×3 matrix​

Answer 1

Answer:

3×J Matrix , ∣A∣=4

3×J Matrix , ∣A∣=4We know that ∣adj A∣=∣A∣n−1

3×J Matrix , ∣A∣=4We know that ∣adj A∣=∣A∣n−1here n=3

3×J Matrix , ∣A∣=4We know that ∣adj A∣=∣A∣n−1here n=3So, ∣adj A∣=42=16

Step-by-step explanation:

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