将下列线性规划转化为标准型
min z 3x1 4x2 2x3 5x4
4x1 x2 2x3 x4 2 x1 x2 3x3 x4 14 2x1 3x2 x3 2x4 2 x1, x2, x3 0, x4无约束
max z 3x1 5x2
3x1 2 x2 18
x1
4 2 x2 12
x1 , x2 0
1
标准型为:
max
z'
3x1
4x2
2x3
5x
' 4
5x
'' 4
4 x1
x2
2 x3
x1 x2 3x3 x
' 4
x
'
4 x '' 4
x''4 2 x5 14
i1 j1
2x21 10x22 3x23 9x24 8x31 5x32 11x33 6x34
x11 x21
x12 x22
x13 x23
x14 x24
16 10
x31
x32
x33
x34
22
st
.
x11 x12
B4
14 35
8 4-3-1
4
产量 行差额 hi
4-3-1
4
6-2-1-3
5
3-3
2
13
27
初始方案如下:x13=3,x14=1,x21=2,x22=1,x24=3,x32=3, 费 用=3*3+4*1+4*2+4*1+5*3+6*3=58(元)