Min Z= X1 +X2 +X3 +X4 +X5 +X6 +X7 +X8

Min Z= X1 +X2 +X3 +X4 +X5 +X6 +X7 +X8
S.T.2X1 +X2 +X3 +X4 =100
2X2 +X3 + 3X5 +2X6 + X7 =100
X1 + X3 + 3X4 +2X6 +3X7 +4X8 =100
X1,X2,X3,X4,X5 ,X6,X7,X8 >=0
经过计算的最优解是X*= (40 ,20,0,0,0 ,30 ,0 ,0)T Z* =90
但该解也是最优解X*= (10 ,50,0,30,0 ,0 ,0 ,0)T Z* =90
书上说线性规划的解应该只有一个最优解或有无穷个最优解或没有最优解,