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The matrix B that has (1,2,3,1) (0,1,-1,2) as rows. Try computing the determinant of B*(B^T) without...

The matrix B that has
(1,2,3,1)
(0,1,-1,2)
as rows. Try computing the determinant of B*(B^T) without computing B*B^T directly, by using the Cauchy-Binnet theorem.

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