The variable suffix .Derivative contains the derivative values of a variable used in an external function which is again used inside a constraint. The .Derivative suffix is only applicable inside the derivative call attribute of external functions.


The value of the .Derivative suffix is numeric.


The dimension of the suffix .Derivative is the dimension of the external function plus the dimension of the variable. The domain of the suffix .Derivative is the domain of the external function followed by the domain of the variable.