sample5_13.cs

用于矩阵的各种运算

/*
 * 示例程序Sample5_13: NLEquations类的求非线性方程组一组实根的蒙特卡洛法
 */

using System;
using CSharpAlgorithm.Algorithm;

namespace CSharpAlgorithm.Sample
{
	class Class1
	{
        // 建立NLEquation的子类，在其中重载函数func
        class NLEq : NLEquations
        {
            protected override double Func(double[] x)
            { 
                double f,f1,f2,f3;
                int n=x.Length;
                f1=3.0*x[0]+x[1]+2.0*x[2]*x[2]-3.0;
                f2=-3.0*x[0]+5.0*x[1]*x[1]+2.0*x[0]*x[2]-1.0;
                f3=25.0*x[0]*x[1]+20.0*x[2]+12.0;
                f=Math.Sqrt(f1*f1+f2*f2+f3*f3);
                return(f);
            }
        }
        
        [STAThread]
		static void Main(string[] args)
		{
            // 求解
            NLEq nleq = new NLEq();
            double[] x={0.0,0.0,0.0};
            double b=2.0; 
            int m=10; 
            int n=3; 
            double eps=0.000001;
            nleq.GetRootsetMonteCarlo(n, x, b, m, eps);
            for (int i=0; i<=n-1; i++)
            {
                Console.WriteLine(x[i]);
            }
        }
	}
}