public static float Newton(float x)
    {
        var a = 5;
        var u = 2;
        var y = 204;
        var n = 0.5f;

        // Since everything but x is constant that whole sqrt(a^3 / u) can be treated like a constant so calculate it early.
        var d = Mathf.Sqrt(Mathf.Pow(a, 3) / u);

        // Number of iterations for Newton's method.
        var steps = 3;

        // Actual Newton's method where xi+1 = xi - f(xi) / f'(xi)
        for (int i = 0; i < steps; i++)
        {
            x = x - f(x, d, y, n) / fp(x, d, y, n);
        }

        // Final approximated value of x is returned
        return x;
    }

    // Original function from moving every term to one side.
    public static float f(float x, float d, float y, float n)
    {
        return y - d * (x - n * Mathf.Sin(x));
    }

    // Derivative of original function.
    public static float fp(float x, float d, float y, float n)
    {
        return  - d * (1 - n * Mathf.Cos(x));
    }