試題詳解

複選題
20. (5%) Let A be n x n matrix. Choose the following statements cquivalent to the statement that A is an invertible matrix.
(A) Nul A= Rⁿ  
(B) RoWA= Rⁿ
(C) A has n nonzero singular values.
(D) Dimension of Col A=0.
(E) The columns of A Form a linearly independent set.