Question:
For square matrices $A$ and $B$ of the same order, we have $\operatorname{adj}(A B)=$ ?
A. $(\operatorname{adj} A)(\operatorname{adj} B)$
B. $(\operatorname{adj} B)(\operatorname{adj} A)$
C. $|\mathrm{AB}|$
D. none of these
Solution:
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