Example 1: Integral of exp(2x)

using System;
using Imsl.Math;

public class QuadratureEx1 : Quadrature.IFunction
{
    public double F(double x)
	{
		return Math.Exp(2.0 * x);
	}

	public static void  Main(String[] args)
	{		
		Quadrature q = new Quadrature();
		Quadrature.IFunction fcn = new QuadratureEx1();
		double result = q.Eval(fcn, 1.0, 3.0);
		
		double expect = 
			(System.Math.Exp(6) - System.Math.Exp(2)) / 2.0;
		Console.Out.WriteLine("result = " + result);
		Console.Out.WriteLine("expect = " + expect);
	}
}

Output

result = 198.019868696902
expect = 198.019868696902