Spline2DDerivative Method (Double, Double, Int32, Int32) |
Returns the value of the partial derivative of the tensor-product spline
at the point (x, y).
Namespace: Imsl.MathAssembly: ImslCS (in ImslCS.dll) Version: 6.5.2.0
Syntax public virtual double Derivative(
double x,
double y,
int xPartial,
int yPartial
)
Public Overridable Function Derivative (
x As Double,
y As Double,
xPartial As Integer,
yPartial As Integer
) As Double
public:
virtual double Derivative(
double x,
double y,
int xPartial,
int yPartial
)
abstract Derivative :
x : float *
y : float *
xPartial : int *
yPartial : int -> float
override Derivative :
x : float *
y : float *
xPartial : int *
yPartial : int -> float
Parameters
- x
- Type: SystemDouble
A double scalar specifying the x-coordinate of
the evaluation point for the tensor-product spline.
- y
- Type: SystemDouble
A double scalar specifying the y-coordinate of
the evaluation point for the tensor-product spline.
- xPartial
- Type: SystemInt32
An int scalar specifying the x-partial derivative.
- yPartial
- Type: SystemInt32
An int scalar specifying the y-partial derivative.
Return Value
Type:
Double A
double scalar containing the value of the
partial derivative
where
i =
xPartial and
j =
yPartial, at
(x, y).
See Also