import graph_pi;
usepackage("mathrsfs");

size(10cm,0);

graphicrules(xunit=1cm, yunit=1cm,
	     xmin=-4, xmax=4,
	     ymin=-2, ymax=10,
	     crop=Crop
	     );
grid(xStep=1, xstep=.5,
     yStep=1, ystep=.5,
     pTick=.8red,
     ptick=dotted+.7bp+.4white,
     above=false
     );
cartesianaxis(
       p=currentpen,
       xticks=RightTicks(Label(currentpen+fontsize(8),
                               Fill(white)),
                         Step=2,
                         NoZero,
                         pTick=.5mm+blue,ptick=grey),
       yticks=RightTicks(Label(currentpen+fontsize(8),
                               align=NE),
                         Step=2,
                         NoZero,
                         pTick=.5mm+blue,ptick=grey),
       viewxaxis=true,
       viewyaxis=true,
       above=true,
       arrow=Arrow
       );
labeloij(p=1.4bp+.5*red,
         arrow=Arrow(SimpleHead,8bp),
         dot
         );
// Définition de la fonction
real f(real x) {return x^2;}

// Tracé de la courbe
path Cf=graph(f,n=400);
draw(Cf,linewidth(1bp));
xlimits(-4.5,4.5,Crop);
ylimits(-2.5,10.5,Crop);
label("$\mathscr{C}_f$",(3,f(3)),NW);