阿摩線上測驗
登入
阿摩線上測驗
登入
9. (5%) Let S1 and S2 be subspaces ofRn and S = S1+ S2, the sum of the two subspaces. Let D1 = 
, the set of elements in S but not in S2.
Then, D1 is also a subspace, and its dimension dim(D1) = dim(S1).