Табулирование 21

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            richTextBox1.Clear();
            chart1.Series[0].Points.Clear();
            chart1.Series[1].Points.Clear();
            double a, b, h, x, y, z;
            a = Convert.ToDouble(textBox1.Text);
            b = Convert.ToDouble(textBox2.Text);
            h = Convert.ToDouble(textBox3.Text);
            for (x=a; x<=b+0.1*h; x += h)
            {
                y = Math.Pow(Math.Sin(x),2)*Math.Cos(x-3.14);
                z = Math.Sin(x)/Math.Pow(x,2);
                chart1.Series[0].Points.AddXY(x, y);
                chart1.Series[1].Points.AddXY(x, z);
                richTextBox1.Text += "x= " + x.ToString("0.00") + "\ty= " + y.ToString("0.00") + "\tz= " + z.ToString("0.00") + Environment.NewLine;
            }
        }

        private void chart1_Click(object sender, EventArgs e)
        {

        }
    }
}