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- if (checkBox1.Checked)
- {
- int s1 = Convert.ToInt32(textBox1.Text);
- int s2 = Convert.ToInt32(textBox2.Text);
- int s3 = Convert.ToInt32(textBox5.Text);
- delta = s2 * s2 - 4 * s1 * s3;
- if (delta > 0)
- {
- x1 = ((-s2) + Math.Sqrt(delta)) / (2.0 * s1);
- x1 = ((-s2) - Math.Sqrt(delta)) / (2.0 * s1);
- }
- if (delta == 0)
- {
- x1 = -s2 / (2.0 * s1);
- x2 = -s2 / (2.0 * s1);
- }
- if (delta <0)
- {
- x1 = -s2 / (2.0 * s1);
- x2 = Math.Sqrt(-delta) / (2.0 * s1);
- }
- textBox6.Text = "x1= " + Convert.ToString(x1) + "; x2= " + Convert.ToString(x2);
- }
- if(checkBox2.Checked)
- {
- string functie = listBox1.Text;
- if (functie == "sin(x)")
- rezultat = Math.Asin(Convert.ToDouble(textBox7.Text));
- if (functie == "cos(x)")
- rezultat = Math.Acos(Convert.ToDouble(textBox7.Text));
- if (functie == "tg(x)")
- rezultat = Math.Atan(Convert.ToDouble(textBox7.Text));
- if (functie == "ctg(x)")
- rezultat = 1/Math.Atan(Convert.ToDouble(textBox7.Text));
- textBox6.Text = rezultat.ToString();
- }
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