MathPHP\Probability\Distribution\Continuous\Cauchy::PDF PHP Метод

    public static function PDF($x, $x₀, $γ)
    {
        Support::checkLimits(self::LIMITS, ['x' => $x, 'x₀' => $x₀, 'γ' => $γ]);
        $π = \M_PI;
        return 1 / ($π * $γ * (1 + (($x - $x₀) / $γ) ** 2));
    }