sample5_6.cs

C#的数值计算的几乎所有算法

/*
 * 示例程序Sample5_6: NLEquations类的求实系数代数方程全部根的牛顿下山法
 */

using System;
using CSharpAlgorithm.Algorithm;

namespace CSharpAlgorithm.Sample
{
	class Class1
	{
        // 建立NLEquation的子类
        class NLEq : NLEquations
        {
        }
        
        [STAThread]
		static void Main(string[] args)
		{
            // 求解
            NLEq nleq = new NLEq();
            int n = 6;
            double[] xr = new double[n];
            double[] xi = new double[n];
            double[] a = {-20.0,7.0,-7.0,1.0,3.0,-5.0,1.0};
            if (nleq.GetRootNewtonDownHill(n, a, xr, xi))
            {
                for (int i=0; i<n; ++i)
                {
                    Complex cpx = new Complex(xr[i], xi[i]);
                    Console.WriteLine(cpx);
                }
            }
            else
                Console.WriteLine("求解失败");
        }
	}
}