## ams_version=1.0 Model Main_st_e04 { Variable x1 { Range: nonnegative; } Variable x2; Variable x3 { Range: nonnegative; } Variable x4; Variable objvar; Constraint e1 { Definition: x3*x1 + 144*x4 >= 11520; } Constraint e2 { Definition: -exp(11.86 - 3950/(460 + x4)) + x2 = 0; } Constraint e3 { Definition: -(400*x1**0.9 + 22*(-14.7 + x2)**1.2) - x3 + objvar = 1000; } Procedure MainInitialization { Body: { x1.upper := 15.1; x2.lower := 14.7; x2.upper := 94.2; x3.upper := 5371; x4.lower := -459.67; x4.upper := 80; } } MathematicalProgram st_e04 { Objective: objvar; Direction: minimize; Constraints: AllConstraints; Variables: AllVariables; Type: NLP; } Procedure MainExecution { Body: { solve st_e04; } } Procedure MainTermination { Body: { return 1; } } }