矩阵形式为: ◆maxz=CX ◆stAX=B X≥0 112 nz 0矩阵形式为： max z=CX s.t       = X 0 AX B , ; 2 , 1 1 2 21 22 2 11 12 1                           = = m P P P mn a m a m a n a a a n a a a A                           = 0 0 0 0 