Question: Compute the determinants using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. | 1
Compute the determinants using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column.

| 1 3 2 12 1 4 4 1 2
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Expanding along the first row 2 4 1 3 ... View full answer
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