using System;
namespace LabWork
{
	class Program
	{
		delegate double Func(double x);

		static void Main()
		{
			Calc(A);
			Calc(B);
			Console.ReadKey();
		}

		static double A(double x)
		{
			return 5 * x + 2 - 2 * Math.Exp(x);
		}

		static double B(double x)
		{
			return Math.Pow(0.5, x) - 1 - Math.Pow((x + 2), 2);
		}

		static void Calc(Func function)
		{
			double a = -10, b = 10, x = (a + b) / 2, eps = 0.0001F;

			while (Math.Abs(b - a) > eps)
			{
				if (Math.Sign(function(x)) != Math.Sign(function(a)))
					b = x;
				else
					a = x;

				x = (a + b) / 2;
			}
			string name = function.Method.Name;
			Console.WriteLine("Корень ф-ции {0}: X = {1}", function.Method.Name, x);
			Console.WriteLine("Значение фунции {0}({1}) = {2}", name, x, function(x));
		}
	}
}