1. The problem statement, all variables and given/known data Let A = [ 3 2 ] [ 6 7 ] Find the following: (a) det (A) = __ (b) the matrix of cofactors C = (__, __) (__, __) (c) adj (A) = (__, __) (__, __) (d) A^-1 = (__,__) (__, __) 2. Relevant equations I am just not to familiar with what cofactor means, and adj(A), A^-1, as well as det(A). How can I find all that from one matrix? 3. The attempt at a solution I put the matrix into RREF, but for the determinant don't I have to like multiply diagonally or something? Thank YOU!