Model hs83 Parameters a[1] = 85.334407 a[2] = 0.0056858 a[3] = 0.0006262 a[4] = 0.0022053 a[5] = 80.51249 a[6] = 0.0071317 a[7] = 0.0029955 a[8] = 0.0021813 a[9] = 9.300961 a[10] = 0.0047026 a[11] = 0.0012547 a[12] = 0.0019085 l[1] = 78 l[2] = 33 l[3] = 27 l[4] = 27 l[5] = 27 u[1] = 102 u[2] = 45 u[3] = 45 u[4] = 45 u[5] = 45 xi[1] = 78 xi[2] = 33 xi[3] = 27 xi[4] = 27 xi[5] = 27 End Parameters Variables x[1:5] = xi[1:5], >=l[1:5], <=u[1:5] obj End Variables Equations 0 <= a[1] + a[2]*x[2]*x[5] + a[3]*x[1]*x[4] - a[4]*x[3]*x[5] <= 92 0 <= a[5] + a[6]*x[2]*x[5] + a[7]*x[1]*x[2] + a[8]*x[3]^2 - 90 <= 20 0 <= a[9] + a[10]*x[3]*x[5] + a[11]*x[1]*x[3] + a[12]*x[3]*x[4] -20 <= 5 ! best known objective = -30665.53867 obj = 5.3578547*x[3]^2 + 0.8356891*x[1]*x[5] + 37.293239*x[1] - 40792.141 End Equations End Model