double f(double x) // целевая функция
        {

            return pow(sin(x), 3) + pow(cos(x), 3);
        }

        double  gold(double a, double b, double eps) // Реализация метода золотого сечения
        {
            double x1, x2, k1, k2, F1, F2;
            int n = 0;
            k2 = (sqrt(5) - 1) / 2;
            k1 = 1 - k2;
            x1 = (a + k1 * (b - a));
            x2 = (a + k2 * (b - a));
            F1 = f(x1);
            F2 = f(x2);

            while (fabs(b - a) > eps)
            {
                listBox1->Items->Add(n + "\t" + a.ToString("0.0000") + "\t" + b.ToString("0.0000") + "\t" + x1.ToString("0.0000") + "\t" + x2.ToString("0.000") + "\t" + F1.ToString("0.0000" + "\t" + F2.ToString("0.0000") + "\t" + (b - a).ToString("0.000")));
                if (f(x1) <= f(x2))
                {
                    a = x1;
                    x1 = x2;
                    x2 = (a + k2 * (b - a));
                    F1 = F2;
                    F2 = f(x2);
                }
                else
                {
                    b = x2;
                    x2 = x1;
                    x1 = (a + k1 * (b - a));
                    F2 = F1;
                    F1 = f(x1);
                }
                n++;

            }
            return f((a + b) / 2);
        }
    private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
        double a, b, eps,max;
        listBox1->Items->Add("n\ta\tb\tx1\tx2\tf(x1)\tf(x2)\tb-a");
        a = GlobalC::a;
        b = GlobalC::b;
        eps = GlobalC::eps;
        max = gold(a, b, eps);
        listBox1->Items->Add("значение функции в точке ее максимума " + max);
        textBox1->Text = Convert::ToString(GlobalC::a);
        textBox2->Text = Convert::ToString(GlobalC::b);
        textBox3->Text = Convert::ToString(GlobalC::eps);
    }
    private: System::Void button3_Click(System::Object^ sender, System::EventArgs^ e) {
        Owner->Show();
        this->Close();
    }
private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) {
    Application::Exit();
}
private: System::Void MyForm1_Load(System::Object^ sender, System::EventArgs^ e) {

}
private: System::Void button4_Click(System::Object^ sender, System::EventArgs^ e) {
    MyForm2^ form3 = gcnew MyForm2();
    form3->Owner = this;
    form3->Show();
    this->Hide();

}