using System;
public class Program
{
public static double f(double x)
return Math.Pow(x, 4) + 3*x - 8;
}
public static void Main()
double x1 = 1, x2 = 2;
double z = 0;
double error = 0.0001;
while(Math.Abs(x1-x2) >= error)
z = (x1+x2)/2;
if(f(z)*f(x1)<=0)
x2 = z;
else
x1 = z;
Console.WriteLine("La solución es " + z + " +- " + error + "");