/// <summary>
/// Incomplete beta function B(x; a, b)
/// </summary>
public static double IncompleteLogValue(double a, double b, double x)
{
return(a * Log(x) - Log(a) + Log(HypergeometricFunction.Value(a, 1 - b, a + 1, x, (int)Round(b))));
}
/// <summary>
/// Incomplete beta function B(x; a, b)
/// </summary>
public static double IncompleteValue(double a, double b, double x)
{
return(x.Pow(a) / a * HypergeometricFunction.Value(a, 1 - b, a + 1, x, 20));
}
