数学问题，高分求解，答得好的在加分。

2025-03-09 12:07:14

推荐回答（6个）

回答1：

Min 5u1-5v1+5u2-5v2+5u3-5v3
st 0.005v1<=0.2
0.0045v1+0.005v2<=0.28
0.003v1+0.005v2+0.005v3<=0.568
v1<=100
v2<=60
v3<=50
u1=100
u2=60
u3=50
end
利用lindo软件运行过程如下：
LP OPTIMUM FOUND AT STEP 3
OBJECTIVE FUNCTION VALUE

1) 500.0000

VARIABLE VALUE REDUCED COST
U1 100.000000 0.000000
V1 40.000000 0.000000
U2 60.000000 0.000000
V2 20.000002 0.000000
U3 50.000000 0.000000
V3 50.000000 0.000000

ROW SLACK OR SURPLUS DUAL PRICES
2) 0.000000 100.000023
3) 0.000000 1000.000000
4) 0.098000 0.000000
5) 60.000000 0.000000
6) 40.000000 0.000000
7) 0.000000 5.000000
8) 0.000000 -5.000000
9) 0.000000 -5.000000
10) 0.000000 -5.000000

NO. ITERATIONS= 3
问题（二）：三个居民点上游的水污染达到国家标准，最少需要花费为：
Min5u1-5v1+5u2-5v2+5u3-5v3
st 0.0045v1<=0.28
0.0027v1+0.003v2<=0.568
u1=100
u2=60
u3=50
v1<=100
v2<=60
v3<=50
end
利用lindo软件运行过程如下：
LP OPTIMUM FOUND AT STEP 3
OBJECTIVE FUNCTION VALUE

1) 188.8889

VARIABLE VALUE REDUCED COST
U1 100.000000 0.000000
V1 62.222225 0.000000
U2 60.000000 0.000000
V2 60.000000 0.000000
U3 50.000000 0.000000
V3 50.000000 0.000000

ROW SLACK OR SURPLUS DUAL PRICES
2) 0.000000 1111.111206
3) 0.220000 0.000000
4) 0.000000 -5.000000
5) 0.000000 -5.000000
6) 0.000000 -5.000000
7) 37.777775 0.000000
8) 0.000000 5.000000
9) 0.000000 5.000000

NO. ITERATIONS= 3

回答2：

这个…………，我也是高中毕业，老师只要求明白数学模型，但这个…………，等等我上大学后给你答案啊

回答3：

血管——————> 血液流动方向
薄膜————————————————————
人工肾<——————液体流动方向
he yi si ,wo bu ming bai

回答4：

The grandest of these ideals is an unfolding American promise that everyone belongs, that everyone deserves a chance that no insignificant person was ever born. Americans are called to enact this promise in our lives and in our laws. And though our nation has sometimes halted, and sometimes delayed, we must follow no other course. Through much of the last century, America's faith in freedom and democracy was a rock in a raging sea. Now it is a seed upon the wind, taking root in many nations. Our democratic faith is more than the creed of our country, it is the inborn hope of our humanity, an ideal we carry but do not own, a trust we bear and pass along. And even after nearly 225 years, we have a long way yet to travel. --By George W.The grandest of these ideals is an unfolding American promise that everyone belongs, that everyone deserves a chance that no insignificant person was ever born. Americans are called to enact this promise in our lives and in our laws. And though our nation has sometimes halted, and sometimes delayed, we must follow no other course. Through much of the last century, America's faith in freedom and democracy was a rock in a raging sea. Now it is a seed upon the wind, taking root in many nations. Our democratic faith is more than the creed of our country, it is the inborn hope of our humanity, an ideal we carry but do not own, a trust we bear and pass along. And even after nearly 225 years, we have a long way yet to travel. --By George W.Bush

回答5：

数学建摸呀?问问建摸老师吧

回答6：

小弟刚高中毕业不理解

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