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Determinantshard
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Given a 3×33 \times 33×3 matrix AAA where Aij=(−1)i+j⋅2i−jA_{ij} = (-1)^{i+j} \cdot 2^{i-j}Aij​=(−1)i+j⋅2i−j, what is the value of det⁡(A)\det(A)det(A)?