Practicing Success
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If A is a non-singular matrix of order 3 × 3, then $adj\, (adj\, A)$ is equal to |
$|A| A$ $|A|^2 A$ $|A|^{-1} A$ none of these |
$|A| A$ |
If A is a non-singular matrix of order n, then $adj\, (adj\, A) =| A|^{n-2} A$ Here, $n = 3$. $∴ adj\, (adj\, A) =|A| A$ |
