运筹学……对偶问题。
maxz=x1+2x2+3x3+4x4-x1+x2-x3-3x4=56x1-7x2+3x3-5x4<=812x1-9x2-9x3+9x4<=20x1.x2>=0x3<=0...
maxz=x1+2x2+3x3+4x4
-x1+x2-x3-3x4=5
6x1-7x2+3x3-5x4<=8
12x1-9x2-9x3+9x4<=20
x1.x2>=0 x3<=0 x4无约速 展开
-x1+x2-x3-3x4=5
6x1-7x2+3x3-5x4<=8
12x1-9x2-9x3+9x4<=20
x1.x2>=0 x3<=0 x4无约速 展开
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