Model hs55 Parameters u[1] = 1 u[2:3] = 1e20 u[4] = 1 u[5:6] = 1e20 End Parameters Variables x[1] = 1, >=0, <=u[1] x[2] = 2, >=0, <=u[2] x[3:5] = 0, >=0, <=u[3:5] x[6] = 2, >=0, <=u[6] obj End Variables Equations x[1] + 2*x[2] + 5*x[5] = 6 x[1] + x[2] + x[3] = 3 x[4] + x[5] + x[6] = 2 x[1] + x[4] = 1 x[2] + x[5] = 2 x[3] + x[6] = 2 ! best known objective = 19/3 obj = x[1] + 2*x[2] + 4*x[5] + exp(x[1]*x[4]) End Equations End Model