Question

lingo软件计算总是提示括号错误的问题，不知道问题在哪里？

max ys.t. y <= (2x1+5x2+7x3+x4-20!/68 y <= (4x1+x2+3x3+11x4-33.33)/266.67 y <= (9x1+3x2+x3+2x4-40)/410 y <= (75-1.5x1-2x2-0.3x3-3x4)/45 y <= (70-0.5x1-x2-0.7x3-2x4)/45 3x1+4.5x2+1.5x3+7.5x4 =150 x1,x2,x3,x4 >=0 y >=0 y <=1 end

Answer 1

max=y;

y <= (2*x1+5*x2+7*x3+x4-20)/68;

y <= (4*x1+x2+3*x3+11*x4-33.33)/266.67;

y <= (9*x1+3*x2+x3+2*x4-40)/410;

y <= (75-1.5*x1-2*x2-0.3*x3-3*x4)/45;

y <= (70-0.5*x1-x2-0.7*x3-2*x4)/45;

3*x1+4.5*x2+1.5*x3+7.5*x4 =150;

Answer 2

你没打右括号啊。。只打了左边的没有右边的。。。。。