帮忙用LINGO做一下这个式子min z=y1+y2+y3+y4+y5+y6+y7s.t.x1j+x5j≤9 x2j+x5j≤9x3j+x4j≤27yj=6.5x1j+7x2j+7.5x3j+8x4j+8.5x5j+9x6jy1≥72.5-11=61.5 y2≥121-10=111y3≥43-9=34y4≥23-9=14y5≥34-8=26y6≥47-8=39y7≥8-3=5j的取值范围是1~

Question

帮忙用LINGO做一下这个式子
min z=y1+y2+y3+y4+y5+y6+y7
s.t.x1j+x5j≤9
x2j+x5j≤9
x3j+x4j≤27
yj=6.5x1j+7x2j+7.5x3j+8x4j+8.5x5j+9x6j
y1≥72.5-11=61.5
y2≥121-10=111
y3≥43-9=34
y4≥23-9=14
y5≥34-8=26
y6≥47-8=39
y7≥8-3=5
j的取值范围是1~7
是st后面第一个式子应该是
x1j+x4j≤9

Answer 1

model:
sets:
s/1..7/:y,x1,x2,x3,x4,x5,x6,a;
endsets
data:
a=61.5 111 34 14 26 39 5;
enddata
min=@sum(s:y);
@for(s:x1+x5