MathPHP\Probability\Distribution\Continuous\Weibull::CDF PHP Метод

    public static function CDF($x, $k, $λ)
    {
        Support::checkLimits(self::LIMITS, ['k' => $k, 'λ' => $λ]);
        if ($x < 0) {
            return 0;
        }
        $ℯ⁻⁽x／λ⁾ᵏ = exp(-pow($x / $λ, $k));
        return 1 - $ℯ⁻⁽x／λ⁾ᵏ;
    }