Question: let x y z be 3x3 matrices x is...
Let X, Y, Z be 3x3 matrices
* X is symmetric and det(X)=3
* Y is lower triangular and det(Y)= 5
* Z has 1's down the main diagonal and the columns of Z form a linearly dependant set
a) det (I+Z)
b) det (X + XT)