問題詳情
4. (5%) Let A be an m by n matrix. Which statement is TRUE?
(A) The null space of A is a subspace of the column space of AT
(B) The dimension of the null space of A plus the dimension of the row space of A is
(C) The null space of AT equals column space of A
(D) The column space of A is orthogonal to the row space of AT
(E) The direct sum of the row space of A and the null space of AT is Rm
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增