Metody numeryczne

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace Metoda_bisekcji
{
   class Program
   {
      public static double F(double x)
      {
         return(Math.Pow(x, 3)-4* Math.Pow(x, 2)+3* x -5);
      }
 
      public delegate double Delegata(double x);
 
      static Delegata funkcja = F;
 
      static double bisekcja(Delegata f, double a, double b)
      {
         double z =0;
         bool stoper = true;

         while(stoper)
         {
	    z =(a + b)/2;
             
            if(f(z)==0)
            {
	       stoper = false;
	       break;
            }
            else
            {
               if(f(z)* f(a)<0)
               {
                  b = z;
               }
               else
               {
                  a = z;
               }
            }
         }
 
	 return z;
      }
 
      static void Main(string[] args)
      {
         double a, b;
 
         Console.WriteLine("Podaj a: ");
         a = Double.Parse(Console.ReadLine());
 
         Console.WriteLine("Podaj b: ");
         b = Double.Parse(Console.ReadLine());
 
         Console.WriteLine(bisekcja(funkcja, a, b));
 
         Console.ReadLine();
      }
   }
}