Example: Solve a System of Nonlinear Equations

using System;
using Imsl.Math;

public class ZeroSystemEx1 : ZeroSystem.IFunction
{
	public void  F(double[] x, double[] f)
	{
		f[0] = x[0] + System.Math.Exp(x[0] - 1.0) + (x[1] + x[2]) *
			(x[1] + x[2]) - 27.0;
		f[1] = System.Math.Exp(x[1] - 2.0) / x[0] + x[2] * x[2] - 10.0;
		f[2] = x[2] + System.Math.Sin(x[1] - 2.0) + x[1] * x[1] - 7.0;
	}


	public static void  Main(String[] args)
	{		
		ZeroSystem zf = new ZeroSystem(3);
		zf.SetGuess(new double[]{4, 4, 4});
		new PrintMatrix("zeros").Print(zf.Solve(new ZeroSystemEx1()));
	}
}

Output

        zeros
          0          
0  0.99999999995498  
1  2.00000000000656  
2  2.99999999999468