A.若原問(wèn)題為無(wú)界解,則對(duì)偶問(wèn)題也為無(wú)界解 B.若原問(wèn)題無(wú)可行解,其對(duì)偶問(wèn)題具有無(wú)界解或無(wú)可行解 C.若原問(wèn)題存在可行解,其對(duì)偶問(wèn)題必存在可行解 D.若原問(wèn)題存在可行解,其對(duì)偶問(wèn)題無(wú)可行解
A.等于m+n B.等于m+n-1 C.小于m+n-1 D.大于m+n-1
A.3 B.2 C.1 D.以上三種情況均有可能