ChisMeth

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            double a = 1.0;
            double b = 6.0;
            double eps = 10e-6;
            double m;
            double x;

            if (Math.Log(a) == 0)
                x = a;
            if (Math.Log(b) == 0)
            while (Math.Abs(a - b) > 2 * eps)
            {
                m = (a + b) / 2;
                if (Math.Log(a)*Math.Log(m)>0)
                    a = m;

            }return (a+b)/2;

        }
    }
}