public static void MonteCarlosMethod()
        {
            double leftEdge, rightEdge, step;
            Console.WriteLine("enter left edge");
            leftEdge = double.Parse(Console.ReadLine());
            Console.WriteLine("enter right edge");
            rightEdge = double.Parse(Console.ReadLine());
            Console.Write("enter number of dots to count on\nn: ");
            int n = int.Parse(Console.ReadLine());
            double height = Math.Pow(rightEdge, 2);
            Random xRandom = new Random(DateTime.Now.Millisecond);
            Random yRandom = new Random(DateTime.Now.Hour);
            double xTemp, yTemp;
            double isInFunction = 0;
            for(int i =0;i<n;i++)
            {
                xTemp = xRandom.NextDouble() * (rightEdge - leftEdge) + leftEdge;
                yTemp = yRandom.NextDouble() * height;
                if (yTemp < Math.Pow(xTemp, 2))
                    isInFunction++;
            }
            double result = ((rightEdge - leftEdge) * height) * (isInFunction / n);
            Console.WriteLine("result: " + result);
            Console.WriteLine("press any key to continue");
            Console.ReadKey();


        }