Une nouvelle série d'exemples : des courbes paramétrées

[mp-gdd.git] / exemples / courbes / cp06.mp

diff --git a/exemples/courbes/cp06.mp b/exemples/courbes/cp06.mp
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+input gdd;
+input gdd-rep;
+input gdd-lbl;
+input gdd-tra;
+input svgnames;
+
+lblPreambule := "\usepackage[frenchb]{babel}"       &
+                "\usepackage[garamond]{mathdesign}" &
+                "\usepackage{amsmath}";
+
+input gdd-fct;
+input gdd-plt;
+
+labeloffset := 6;
+gddU:=1.2cm;
+
+vardef f(expr t) = 1/t + 1/(t+1) enddef;
+vardef g(expr t) = 1/t + 1/(1+2*t+t**2) enddef;
+vardef p(expr x) = x*(x+2)+2 enddef;
+
+def avecCrayon(expr t,c) = withpen pencircle scaled t withcolor c enddef;
+
+
+
+beginfig(1);
+
+
+ Repere(10,10,5,5,1,1);
+ Axes; 
+ Debut; 
+  Graduations; Unites(1);
+
+  drawoptions(withcolor LightSlateGrey);
+  trace Droite(origine,Point(1,1));
+  trace Representation(p,-3,1,20);
+
+  trace Courbe(f,g,-20,-1.1,300) avecCrayon(1.5,Teal);
+  trace Courbe(f,g,-0.9,-0.1,300) avecCrayon(1.5,Teal);
+  trace Courbe(f,g,0.1,20,300) avecCrayon(1.5,Teal);
+
+  pointe Point(0,0);
+  pointe Point(-1,0);
+  pointe Point(-0.526,-0.140);
+
+ Fin;
+
+
+endfig;
+
+end
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