FunctionBasis.DerivativesAt Method

Evaluates the derivatives of the member functions of this FunctionBasis at a specified value.

[Visual Basic]
Public Function DerivativesAt( _
ByVal x As Double _
) As GeneralVector

[C#]
public GeneralVector DerivativesAt(
double x
);

A Vector containing the derivatives of the member functions.

This method creates a new Vector every time it is called. In some situations, it may be more efficient to call the FillDerivatives method instead.

Exception Type	Condition
InvalidOperationException	No derivatives are available for this FunctionBasis.