MCQ
If $A$ is a $n \times n$ matrix, then $adj(adj \,A)$=
- A$|A|{\,^{n - 1}}A$
- ✓$|A|{\,^{n - 2}}A$
- C$|A{|^n}n$
- DNone of these
✓
Answer
Correct option: B.
$|A|{\,^{n - 2}}A$
b
(b) We know by the fundamental concept that $adj\,(adj\,A) = |A{|^{n - 2}}A$.
(b) We know by the fundamental concept that $adj\,(adj\,A) = |A{|^{n - 2}}A$.
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