試題詳解

11. Which of the following statements are true?
(A) is singular if and only if Ax = b has infinitely many solutions for every n x 1 vector b.
(B) Every matrix transformnation is a linear transformation.
(C) If A is a nonsingular upper triangular matrix, then the adjoint matrix is lower triangular.
(D) The dimension of the zero space {0} is 0.
(E) None of the above.