BSpline.Derivative Method (Double, Int32)

BSplineDerivative Method (Double, Int32)

Returns the value of the derivative of the B-spline at a point.

Namespace: Imsl.Math
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.2.0

Syntax

public double Derivative(
	double x,
	int ideriv
)

Public Function Derivative ( 
	x As Double,
	ideriv As Integer
) As Double

public:
double Derivative(
	double x, 
	int ideriv
)

member Derivative : 
        x : float * 
        ideriv : int -> float

x: Type: SystemDouble
A double which specifies the point at which the derivative is to be evaluated.
ideriv: Type: SystemInt32
A int specifying the derivative to be computed.

Type: Double
A double containing the value of the derivative of the B-spline at the point x.

Remarks

If ideriv is zero, the function value is returned. If one, the first derivative is returned, etc.