求大神为什么lingo报错?model:min=((x2-x1)^2+(y2-y1)^2)^(1/2)+((x4-x3)
求大神为什么lingo报错?
model:
min=((x2-x1)^2+(y2-y1)^2)^(1/2)+((x4-x3)^2+(y4-y3)^2)^(1/2)+2*@asin(((x2-x3)^2+(y2-y3)^2)^(1/2)/20)*3.14*10/180;
(x2-80)^2+(y2-210)^2=10^2;
(X3-80)^2+(y3-210)^2=10^2;
x1=0;
y1=0;
End