%% PhS
%% 

%% échelle et étendue de l'image
60 setxunit
-1 6  setxrange
-1 4  setyrange


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  DANGER !! Il ne faut pas utiliser de variables
%%  DANGER !! qui commence par les lettres :
%%  DANGER !! xmin, xmax, ymin et ymax...
%%  DANGER !! Utiliser x_min, y_min...
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% procédures
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


%% on donne ici x(t)
/xdet {
1 dict begin
	/t exch def
	t
end
	} def

%% on donne ici y(t)
/ydet {
1 dict begin
	/t exch def
	t dup mul dup mul -0.05 mul t dup mul 0.4 mul add t -0.3 mul add 1.5 add
end
	} def


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% définitions des couleurs
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

/coul1 {120 255 div 70 255 div 9 255 div setrgbcolor} def



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% tracés
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%% tracé des axes et du point Origine
1 setlinewidth
15 setfontsize
noir
continu
traceaxes
marks
tracerepere



2 setlinewidth
coul1
continu
-2 2.5 settrange
{xdet 2.5 add} {ydet} courbeparam


/fillstyle {hachure} def
0.5 5 {-2.5 add ydet} Fillcourbe


1 setlinewidth


noir
continu
[0.5 0 0.5 -2 ydet] (-) ligne
[5 0 5 2.5 ydet] (-) ligne

rouge
2 setlinewidth
[0 1.836 5.5 1.836] (-) ligne


1 setlinewidth
pointilles
[5 2.5 ydet 5 1.836] (-) ligne

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% texte
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
setTimesItalic


noir
<latex>
$\displaystyle \bar{f}=\frac{1}{b-a}\int_{a}^{b}f(x) \cdot dx$
</latex>
4 3  [2 dup] cctexlabel


vert
<latex>
$a$
</latex>
0.5 -0.3 [2 dup] cctexlabel

<latex>
$b$
</latex>
5 -0.4 [2 dup] cctexlabel