Understanding the Matrix of Minors

bill nye scienceguy! · Jan 6, 2006

can anyone explain to me what the matrix of minors is?

TD · Jan 6, 2006

Is it possible you mean the minors of a matrix?

bill nye scienceguy! · Jan 6, 2006

no, I've been given the question:

Ax=b.A=(301), x= transverse of {x,y,z} and b=transverse of {5,2,-1}
(132)
(120)

and the first thing it asks me to do is calculate the matrix of minors. is this just another term for the adjoint matrix or something?

TD · Jan 6, 2006

Well the "matrix of minors" (of a square matrix) would be the matrix where each element is the minor of the number which was in that position, which isn't the same as the adjoint yet.
For the adjoint, you'd have to take the cofactors (which is the minors + sign taken into account) and transpose that. So adjoint = transpose of cofactor matrix.

Understanding the Matrix of Minors

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