{
   auto c = new TCanvas("c","c",0,0,500,500);
   c->Range(-11,-11,11,11);

   auto f2 = new TF1("x2","x*x",-10,10);
   f2->SetLineColor(kRed);
   f2->Draw("same");

   auto f3 = new TF1("x3","x*x*x",-10,10);
   f3->SetLineColor(kBlue);
   f3->Draw("same");

   // Draw the axis with arrows
   auto ox = new TGaxis(-10,0,10,0,-10.,10.,510,"+-S>");
   ox->SetTickSize(0.009);
   ox->SetLabelFont(42);
   ox->SetLabelSize(0.025);
   ox->Draw();
   auto oy = new TGaxis(0,-10,0,10,-10,10,510,"+-S>");
   oy->SetTickSize(0.009);
   oy->SetLabelFont(42);
   oy->SetLabelSize(0.025);
   oy->Draw();
}