1个回答
展开全部
就是每个节点的人流量输入等于输出
x1+x3=450+350=800
x3+x6=250+500=750
x1+x4-x2=550
x4+x6=x7
x2+200=x5+200
x5+300=x7+400
整理后
x1+x3=800
x3+x6=750
x1-x2+x4=550
x4+x6-x7=0
x2-x5=0
x5-x7=100
所以
1 0 1 0 0 0 0 800
0 0 1 0 0 1 0 750
1 -1 0 1 0 0 0 550
0 0 0 1 0 1 -1 0
0 1 0 0 -1 0 0 0
0 0 0 0 1 0 -1 100
x1+x3=450+350=800
x3+x6=250+500=750
x1+x4-x2=550
x4+x6=x7
x2+200=x5+200
x5+300=x7+400
整理后
x1+x3=800
x3+x6=750
x1-x2+x4=550
x4+x6-x7=0
x2-x5=0
x5-x7=100
所以
1 0 1 0 0 0 0 800
0 0 1 0 0 1 0 750
1 -1 0 1 0 0 0 550
0 0 0 1 0 1 -1 0
0 1 0 0 -1 0 0 0
0 0 0 0 1 0 -1 100
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