Как в visual c++ forms нарисовать график функции tg x?

 private: System::Void MyForm_Load(System::Object^ sender, System::EventArgs^ e) {
  using namespace System::Collections::Generic;
  using namespace System::Drawing::Drawing2D;
  using namespace System::Windows::Forms::DataVisualization::Charting;
  Dictionary <double, double> ^f1 = gcnew Dictionary<double, double>();
  chart1->Series[0]->ChartType = SeriesChartType::Line;
  chart1->Series[0]->MarkerStyle = MarkerStyle::Circle;
  
  chart1->ChartAreas[0]->AxisY->ScaleBreakStyle->Enabled = true;
  chart1->ChartAreas[0]->AxisY->ScaleBreakStyle->CollapsibleSpaceThreshold = 25;
  chart1->ChartAreas[0]->AxisY->ScaleBreakStyle->LineWidth = 2;
  chart1->ChartAreas[0]->AxisY->ScaleBreakStyle->LineColor = Color::Red;
  chart1->ChartAreas[0]->AxisY->ScaleBreakStyle->StartFromZero = StartFromZero::Auto;
  chart1->ChartAreas[0]->AxisY->ScaleBreakStyle->Spacing = 2;
  
  for (double x = 0; x < 3.14; x += 0.1) {
   double f = tan(x); //#include <cmath>
   f1->Add(x, f);
  }
  chart1->Series[0]->Points->DataBindXY(f1->Keys, f1->Values);
  chart1->Series[0]->LegendText = L"tan(x)";
  chart1->Series[0]->Color = System::Drawing::Color::Green;
  chart1->Series[0]->BorderWidth = 2;
 }