public class SimpleLinearDemo
    {
        public static void Execute()
        {
            double[] inputs = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
            double[] outputs = { 6, 9.5, 13, 15, 16.5, 17.5, 18.5, 19, 19.5, 19.7, 19.8 };


            double[] logx = Matrix.Log(inputs);


            var lr = new SimpleLinearRegression();


            double error = lr.Regress(logx, outputs);


            Console.WriteLine("the ‘generalized least squares’ value is {0}", error);


            string result = lr.ToString("N4", CultureInfo.InvariantCulture);


            Console.WriteLine("the line function is : {0}", result);
        }
    }


class Program
    {
        static void Main(string[] args)
        {
            SimpleLinearDemo.Execute();
            Console.ReadLine();
        }
    }