Show that 3 3 determinants can be computed using the diagonal rule: Repeat the first two
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Show that 3 × 3 determinants can be computed using the diagonal rule: Repeat the first two columns of the matrix and form the products of the numbers along the six diagonals indicated. Then add the products for the diagonals that slant from left to right and subtract the products for the diagonals that slant from right to left.
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Using the definition of 3 x 3 determinants given in Eq 2 we get 923 a23 de...View the full answer
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