private void button1_Click(object sender, EventArgs e)
{
int n;
int.TryParse(textBox2.Text, out n);
double[] x = new double[n + 1];
double[] y = new double[n + 1];
Interpolation cInt = new Interpolation();
cInt.CalculateNodes(x, y, 0, 2, n);
textBox1.Clear();
for (int i = 0; i <= n; i++)
{
textBox1.Text += x[i].ToString("F4") + '\t' + y[i].ToString("F4") + Environment.NewLine;
}
chart1.Series[0].Points.Clear();
chart1.Series[1].Points.Clear();
chart2.Series[0].Points.Clear();
double t = 0;
while (t <= 2)
{
double f1 = cInt.Function(t);
chart1.Series[0].Points.AddXY(t, f1);
double f2 = cInt.Polinom(t, n, 0, 2);
chart1.Series[1].Points.AddXY(t, f2);
chart2.Series[0].Points.AddXY(t, f2 - f1);
t += 0.001;
}
}