public static decimal FirstDerivative(
	Func<decimal[], decimal> function,
	int withRespectTo,
	params decimal[] points
)

Public Shared Function FirstDerivative ( 
	function As Func(Of Decimal(), Decimal),
	withRespectTo As Integer,
	ParamArray points As Decimal()
) As Decimal

public:
static Decimal FirstDerivative(
	Func<array<Decimal>^, Decimal>^ function, 
	int withRespectTo, 
	... array<Decimal>^ points
)

static member FirstDerivative : 
        function : Func<decimal[], decimal> * 
        withRespectTo : int * 
        points : decimal[] -> decimal