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求解参数线性规划问题: min f=(-6+ρ)x4+(12-2ρ)x5+(30-3ρ)x6+(-50+10ρ)x7, s.t.x1-x4+x5-x6+x7=1, x2+x5
求解参数线性规划问题:
min f=(-6+ρ)x4+(12-2ρ)x5+(30-3ρ)x6+(-50+10ρ)x7,
s.t.x1-x4+x5-x6+x7=1,
x2+x5-2x6+x7=2,
x3-3x4+2x5+x6-x7=3,
xj≥0(j=1,2,…,7).
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求解参数线性规划问题:
min f=(-6+ρ)x4+(12-2ρ)x5+(30-3ρ)x6+(-50+10ρ)x7,
s.t.x1-x4+x5-x6+x7=1,
x2+x5-2x6+x7=2,
x3-3x4+2x5+x6-x7=3,
xj≥0(j=1,2,…,7).
求解线性规划问题
min f=x2-3x3+2x5,
s.t.x1+3x2-x3+2x5=7,
-2x2+4x3+x4=12,
-4x2+3x3+8x5+x6=10,
xj≥0(j=1,2,…,6).
利用扩充问题求解下列线性规划问题:min f=-x4+2x5+3x6,
s.t. x1+5x4-x5+5x6+x7=17,
x2-x4+2x5-x6+x7=-22,
x3+x4+x5-x6+x7=-33,
xi≥0(i=1,2,…,7).
用对偶单纯形法求解下列线性规划问题:min f=3x1+2x2+x3,
s.t.x1+x2+x3≤6,
x1-x3≥4,
x2-x3≥3,
x1,x2,x3≥0.
用单纯形法求解下列线性规划问题:
(1)min f=x1-x2+x3,
s.t.x1+x2-2x3≤2,
2x1+x2+x3≤3,
-x1+x3≤4,
x1,x2,x3≥0;
(2)min f=3-3x2+x3,
s.t.2x1+x2-x3=1,
x2+3x3+x4=7,
xi≥0(i=1,2,3,4);
(3)min f=4-x2+x3,
s.t.x1-2x2+x3=2,
x2-2x3+x4=2,
x2+x3+x5=5,
xi≥0(i=1,2,…,5).
求解下列线性规划问题:
(1)max z=x1+2x2,
s.t.2x1+x2≤8,
-x1+x2≤4,
x1-x2≤0,
0≤x1≤3,x2≥0;
(2)min f=-3x1-11x2-9x3+x4+29x5,
s.t.x2+x3+x4-2x5≤4,
x1-x2+x3+2x4+x5≥0,
x1+x2+x3-3x5≤1,
x1无符号限制,xi≥0(j=2,3,4,5);
(3)max x=x1+6x2+4x3,
s.t.-x1+2x2+2x3≤13,
4x1-4x2+x3≤20,
x1+2x2+x3≤17,
x1≥1,x2≥2,x3≥3.
求解线性规划问题:
min x0=8x1+2x2+4x3+7x4+5x5-10,
s.t.-3x1-3x2+x3+2x4+3x5≤-2,
-5x1-3x2-2x3-x4+x5≤-4,
用图解法求解下列线性规划问题:min x0=-7x1-2x2
s.t.2x1+7x2≤21,
7x1+2x2≤21,
x1+x2≥1,
x1,x2≥0
已知线性规划问题 min z=c1x1+c2x2+c3x3
用单纯形法求解,得到最终单纯形表如表2.5.3所示,
要求:
求a11,a12,a13,a21,a22,a23,b1,b2的值;