let U=Span{u,v,w} be the subspace spanned by u, v, w where
u=(0,3,1), v=(4,8,2), w=(2,7,2)
find a subset of B so that B is a base for U
Then why are you attempting this question?
Your reply suggests that you cannot be bothered making any effort (for example, reviewing the definition in your class notes or textbook). Please apply some effort and come back with a more productive reply.
Moderator edit: Thread is now re-opened.