The Origin of the Utility Function

[#1]

Could you please tell me the specific formulas for the maximization and minimization of Desirability() in the utility function? I want to know how the following figure is constructed through Desirability().

[#2]

I would guess you can find the answer (or some of it) from here Profilers > Profiler > Desirability Profiling and Optimization > Construction of Desirability Functi...