InitializeComponent();

}

public Form1 form = new Form1();

public void output(double[] col1, double[] col2, double[] col3, double[] col4, double[] col5, double[] col6, double[] col7,

double s_col1, double s_col2, double s_col3, double s_col4, double s_col6, double s_col7, double R)

{

StreamReader filen = new StreamReader("n.txt");

int number = Convert.ToInt32(filen.ReadLine());

richTextBox1.Text = "";

for (int i = 0; i < number; i++)

{

dataGridView1.Rows[i].Cells[0].Value = Math.Round(col1[i], 3);

dataGridView1.Rows[i].Cells[1].Value = Math.Round(col2[i], 3);

dataGridView1.Rows[i].Cells[2].Value = Math.Round(col3[i], 3);

dataGridView1.Rows[i].Cells[3].Value = Math.Round(col4[i], 3);

dataGridView1.Rows[i].Cells[4].Value = Math.Round(col5[i], 3);

dataGridView1.Rows[i].Cells[5].Value = Math.Round(col6[i], 3);

dataGridView1.Rows[i].Cells[6].Value = Math.Round(col7[i], 3);

}

richTextBox1.AppendText("Коефіцієнт детермінації = " + Math.Round(R, 6));

dataGridView1.Rows[number + 1].Cells[0].Value = Math.Round(s_col1, 3);

dataGridView1.Rows[number + 1].Cells[1].Value = Math.Round(s_col2, 3);

dataGridView1.Rows[number + 1].Cells[2].Value = Math.Round(s_col3, 3);

dataGridView1.Rows[number + 1].Cells[3].Value = Math.Round(s_col4, 3);

dataGridView1.Rows[number + 1].Cells[5].Value = Math.Round(s_col6, 3);

dataGridView1.Rows[number + 1].Cells[6].Value = Math.Round(s_col7, 3);

output_2(R);

}

public void output_2(double R)

{

double d;

d = Convert.ToDouble(dataGridView3.Rows[6].Cells[4].Value);

if (R == Convert.ToDouble(dataGridView3.Rows[5].Cells[4].Value))

{

richTextBox1.AppendText("\nДана форма пояснює " + Math.Round(R, 6) + " варіації, що є найкращим показником, і таким найкраще чином підходить для апроксимації введених даних");

}

else

{

richTextBox1.AppendText("\nЛінійна модель пояснює " + Math.Round(R, 6) + " варіації, що означає неправильність вибору форми функціонального зв'язку.");

richTextBox1.AppendText("\nНайкраще підходить для апроксимації введених даних функція №" + d);

}

}

public void max(double[] x, double[] y)

{

function1(x, y);

function2(x, y);

function3(x, y);

function4(x, y);

function5(x, y);

double[] maxR = new double[5];

double max = 0;

int n = 0;

for (int i = 0; i < 5; i++)

{

maxR[i] = Convert.ToDouble(dataGridView3.Rows[i].Cells[4].Value);

if (maxR[i] >= max)

{

max = maxR[i];

n = i + 1;

}

}

dataGridView3.Rows[5].Cells[4].Value = max;

dataGridView3.Rows[6].Cells[4].Value = n;

}

public void function1(double[] x, double[] y)

{

StreamReader filen = new StreamReader("n.txt");

int number = Convert.ToInt32(filen.ReadLine());

StreamWriter fileyp = new StreamWriter("yp.txt");

double[] xw = new double[number];

double[] x2 = new double[number];

double[] xwy = new double[number];

double[] yp = new double[number];

double[] yp_y = new double[number];

double[] y_yn = new double[number];

double sy = 0, sx = 0, sxw = 0, sx2 = 0, sxwy = 0, syp_y = 0, sy_yn = 0, a0, a1, y_=0, R;

for (int i = 0; i < number; i++)

{

sx += x[i];

sy += y[i];

xw[i] = 1/x[i];

sxw += xw[i];

x2[i] = Math.Pow(xw[i], 2);

sx2 += x2[i];

xwy[i] = xw[i] * y[i];

sxwy += xwy[i];

}

y_ = sy/number;

a1 = ((number * sxwy) - (sy * sxw)) / ((number * sx2) - Math.Pow(sxw, 2));

a0 = (sy - (a1 * sxw)) / number;

for (int i = 0; i < number; i++)

{

yp[i] = a0 + (a1 / x[i]);

yp_y[i] = Math.Pow(yp[i] - y_, 2);

syp_y += yp_y[i];

y_yn[i] = Math.Pow(y[i] - y_, 2);

sy_yn += y_yn[i];

fileyp.Write(Math.Round(yp[i], 2) + "\n");

}

R = syp_y / sy_yn;

dataGridView1.Rows[0].Cells[4].Value = R;

output(xw, y, x2, xwy, yp, yp_y, y_yn, sxw, sy, sx2, sxwy, syp_y, sy_yn, R);

fileyp.Close();

}

public void function2(double[] x, double[] y)

{

StreamReader filen = new StreamReader("n.txt");

int number = Convert.ToInt32(filen.ReadLine());

StreamWriter fileyp = new StreamWriter("yp.txt");

double[] yw = new double[number];

double[] x2 = new double[number];

double[] xyw = new double[number];

double[] yp = new double[number];

double[] yp_y = new double[number];

double[] y_yn = new double[number];

double sy = 0, sx = 0, syw = 0, sx2 = 0, sxyw = 0, syp_y = 0, sy_yn = 0, a0, a1, a0w, y_ = 0, R;

for (int i = 0; i < number; i++)

{

sx += x[i];

sy += y[i];

yw[i] = Math.Log(y[i]);

syw += yw[i];

x2[i] = Math.Pow(x[i], 2);

sx2 += x2[i];

xyw[i] = x[i] * yw[i];

sxyw += xyw[i];

}

y_ = sy / number;

a1 = ((number * sxyw) - (syw * sx)) / ((number * sx2) - Math.Pow(sx, 2));

a0w = (syw - (a1 * sx)) / number;

a0 = Math.Exp(a0w);

for (int i = 0; i < number; i++)

{

yp[i] = a0 * Math.Exp(a1 * x[i]);

yp_y[i] = Math.Pow(yp[i] - y_, 2);

syp_y += yp_y[i];

y_yn[i] = Math.Pow(y[i] - y_, 2);

sy_yn += y_yn[i];

fileyp.Write(Math.Round(yp[i], 2) + "\n");

}

R = syp_y / sy_yn;

dataGridView1.Rows[1].Cells[4].Value = R;

output(x, yw, x2, xyw, yp, yp_y, y_yn, sx, syw, sx2, sxyw, syp_y, sy_yn, R);

fileyp.Close();

}

public void function3(double[] x, double[] y)

{

StreamReader filen = new StreamReader("n.txt");

int number = Convert.ToInt32(filen.ReadLine());

StreamWriter fileyp = new StreamWriter("yp.txt");

double[] xw = new double[number];

double[] yw = new double[number];

double[] x2 = new double[number];

double[] xyw = new double[number];

double[] yp = new double[number];

double[] yp_y = new double[number];

double[] y_yn = new double[number];

double sy = 0, sxw = 0, syw = 0, sx2 = 0, sxy = 0, syp_y = 0, sy_yn = 0, a0, a1, a0w, y_ = 0, R;

for (int i = 0; i < number; i++)

{

sy += y[i];

xw[i] = Math.Log(x[i]);

sxw += xw[i];

yw[i] = Math.Log(y[i]);

syw += yw[i];

x2[i] = Math.Pow(xw[i], 2);

sx2 += x2[i];

xyw[i] = xw[i] * yw[i];

sxy += xyw[i];

}

y_ = sy / number;

a1 = ((number * sxy) - (syw * sxw)) / ((number * sx2) - Math.Pow(sxw, 2));

a0w = (syw - (a1 * sxw)) / number;

a0 = Math.Exp(a0w);

for (int i = 0; i < number; i++)

{

yp[i] = a0 * Math.Pow(x[i], a1);

yp_y[i] = Math.Pow(yp[i] - y_, 2);

syp_y += yp_y[i];

y_yn[i] = Math.Pow(y[i] - y_, 2);

sy_yn += y_yn[i];

fileyp.Write(Math.Round(yp[i], 2) + "\n");

}

R = syp_y / sy_yn;

dataGridView1.Rows[2].Cells[4].Value = R;

output(xw, yw, x2, xyw, yp, yp_y, y_yn, sxw, syw, sx2, sxy, syp_y, sy_yn, R);

fileyp.Close();

}

public void function4(double[] x, double[] y)

{

StreamReader filen = new StreamReader("n.txt");

int number = Convert.ToInt32(filen.ReadLine());

StreamWriter fileyp = new StreamWriter("yp.txt");

double[] xw = new double[number];

double[] x2 = new double[number];

double[] xyw = new double[number];

double[] yp = new double[number];

double[] yp_y = new double[number];

double[] y_yn = new double[number];

double sy = 0, sxw = 0, sx2 = 0, sxy = 0, syp_y = 0, sy_yn = 0, a0, a1, y_ = 0, R;

for (int i = 0; i < number; i++)

{

xw[i] = Math.Log(x[i]);

sxw += xw[i];

sy += y[i];

x2[i] = Math.Pow(xw[i], 2);

sx2 += x2[i];

xyw[i] = xw[i] * y[i];

sxy += xyw[i];

}

y_ = sy / number;

a1 = ((number * sxy) - (sy * sxw)) / ((number * sx2) - Math.Pow(sxw, 2));

a0 = (sy - (a1 * sxw)) / number;

for (int i = 0; i < number; i++)

{

yp[i] = a0 + a1 * Math.Log(x[i]);

yp_y[i] = Math.Pow(yp[i] - y_, 2);

syp_y += yp_y[i];

y_yn[i] = Math.Pow(y[i] - y_, 2);

sy_yn += y_yn[i];

fileyp.Write(Math.Round(yp[i], 2) + "\n");

}

R = syp_y / sy_yn;

dataGridView1.Rows[3].Cells[4].Value = R;

output(xw, y, x2, xyw, yp, yp_y, y_yn, sxw, sy, sx2, sxy, syp_y, sy_yn, R);

fileyp.Close();

}

public void function5(double[] x, double[] y)

{

StreamReader filen = new StreamReader("n.txt");

int number = Convert.ToInt32(filen.ReadLine());

StreamWriter fileyp = new StreamWriter("yp.txt");

double[] xw = new double[number];

double[] yw = new double[number];

double[] x2 = new double[number];

double[] xyw = new double[number];

double[] yp = new double[number];

double[] yp_y = new double[number];

double[] y_yn = new double[number];

double sy = 0, sxw = 0, syw = 0, sx2 = 0, sxy = 0, syp_y = 0, sy_yn = 0, a0, a0w, a1, a1w, y_ = 0, R;

for (int i = 0; i < number; i++)

{

xw[i] = 1 / x[i];

sxw += xw[i];

yw[i] = 1 / y[i];

syw += yw[i];

sy += y[i];

x2[i] = Math.Pow(xw[i], 2);

sx2 += x2[i];

xyw[i] = xw[i] * yw[i];

sxy += xyw[i];

}

y_ = sy / number;

a1w = ((number * sxy) - (syw * sxw)) / ((number * sx2) - Math.Pow(sxw, 2));

a0w = (sy - (a1w * sxw)) / number;

a1 = 1 / a0w;

a0 = a1 / a0w;

for (int i = 0; i < number; i++)

{

yp[i] = (a0 * xw[i]) / (a1 + xw[i]);

yp_y[i] = Math.Pow(yp[i] - y_, 2);

syp_y += yp_y[i];

y_yn[i] = Math.Pow(yw[i] - y_, 2);

sy_yn += y_yn[i];

fileyp.Write(Math.Round(yp[i], 2) + "\n");

}

R = syp_y / sy_yn;

dataGridView1.Rows[4].Cells[4].Value = R;

output(xw, y, x2, xyw, yp, yp_y, y_yn, sxw, sy, sx2, sxy, syp_y, sy_yn, R);

fileyp.Close();

}

private void button3_Click(object sender, EventArgs e)

{

StreamReader filen = new StreamReader("n.txt");

int number = Convert.ToInt32(filen.ReadLine());

StreamReader filex = new StreamReader("x.txt");

StreamReader filey = new StreamReader("y.txt");

double[] x = new double[number];

double[] y = new double[number];

for (int i = 0; i < number; i++)

{

x[i] = Convert.ToDouble(filex.ReadLine());

y[i] = Convert.ToDouble(filey.ReadLine());

}

//додавання рядків

for (int i = 0; i < number + 2; i++)

{