Doing some studying for my exam and I see this question



Part a) is really confusing me, I have no idea what its asking.

From my understanding (which must be wrong), is it saying the conjugate of the matrix A = the conjugate determinant of A?

what is going on

This is wrong. On the left hand side is dealing with a matrix, the right hand is dealing with a real number. The dimensions don't match, therefore it is false

I believe this is a typo, and should say det(bar(A)) = bar(det(A))

With this, you should be able to also prove b )

This post was edited by cdexswzaq on Dec 6 2014 07:43pm

Indeed b comes directly from a and the fact they give you.

Okay thats what I was thinking, I was confused how a matrix could equal a real number (except for 1x1)

Thanks for the clarification