計(jì)算下列各行列式. (1) (2) (3) (4) (5) (6) (7) (8)
A.若Ax=0僅有零解,則Ax=b有唯一解 B.若Ax=0有非零解,則Ax=b有無窮多解 C.若Ax=b有無窮多解,則Ax=0僅有零解 D.若Ax=b有無窮多解,則Ax=0有非零解