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Verify
A
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\mathrm{A}(\operatorname{adj} \mathrm{A})=(\operatorname{adj} \mathrm{A}) \mathrm{A}=|\mathrm{A}| \mathrm{I}
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…
Mathematics
Problem
Verify
A
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adj
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)
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(
adj
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)
A
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A
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I
\mathrm{A}(\operatorname{adj} \mathrm{A})=(\operatorname{adj} \mathrm{A}) \mathrm{A}=|\mathrm{A}| \mathrm{I}
A
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adj
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adj
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in Exercises 3 and 4 3.
2
3
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6
\begin{array}{cc}2 & 3 \\ -4 & -6\end{array}
2
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3
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6
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