Let u, v, w be the three columns of a 3x3 matrix A. The determinant of matrisen.A can then be regarded as a function of u, v, w. Assume that (u, v, w) = det (A) = 1 Determine the (v +6 w, w +3 u, u +5 v).

i got none progress..

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- October 31st 2012, 07:39 AMPetrusMatrice
Let u, v, w be the three columns of a 3x3 matrix A. The determinant of matrisen.A can then be regarded as a function of u, v, w. Assume that (u, v, w) = det (A) = 1 Determine the (v +6 w, w +3 u, u +5 v).

i got none progress.. - October 31st 2012, 06:47 PMchiroRe: Matrice
Hey Petrus.

What are the identities of the determinant when you do row operations? You have probably been given a few identities that say how the determinant changes when you do row operations.

Also take note that det(A) = det(A^T). - November 1st 2012, 02:37 PMPetrusRe: Matrice
still dont know what to do <.<