Question

LINGO ERROR CODE 是1017,求解E的最小值,请帮查看是何问题?

Answer 1

Model:

TITLE E;

!目标函数;

min=E;

!约束条件;

a+b+c+d=1;

80*a+85*b+70*c+80*d>=80;

0.90*a+0.92*b+0.91*c+0.93*d>=0.90;

3.1*a+3.5*b+2.6*c+2.8*d>=3.1;

50*a+60*b+65*c+70*d