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Determinantseasy
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For a 3×33 \times 33×3 matrix AAA with det⁡(A)=−2\det(A) = -2det(A)=−2, what is det⁡(cof(A))\det(\text{cof}(A))det(cof(A)), where cof(A)\text{cof}(A)cof(A) is the cofactor matrix?