Thread: subspace 1

Check if S is subspace of V

1) S is the set of all upper triangular matrices. V = Mnxm

2) S is the set of all the matrices nxn whose the determinant is 1. V = Mnxn

Check my solution

1)






u+v belongs to S



belongs to S


2)
(determinant equal to 1)







u+v It belong to S



belong to S