AdvancedMathPsi Method (Int32, Double)

Computes the polygamma function.

Namespace: Meta.Numerics.Functions
Assembly: Meta.Numerics (in Meta.Numerics.dll) Version: 4.1.4

Syntax

public static double Psi(
	int n,
	double x
)

Public Shared Function Psi ( 
	n As Integer,
	x As Double
) As Double

public:
static double Psi(
	int n, 
	double x
)

static member Psi : 
        n : int * 
        x : float -> float

Type: Double
The value of ψ_n(x).

Exceptions

Exception	Condition
ArgumentOutOfRangeException	n is negative.

Remarks

The polygamma function gives higher logarithmic derivatives of the Gamma function.

AdvancedMathAddLanguageSpecificTextSet("LST759E9770_0?cpp=::|nu=.");Psi Method (Int32, Double)