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) = t*t-2*t enddef; vardef g(expr t) = t*t + 1/(t*t) enddef; vardef fp(expr t) = 2*t+t*t enddef; vardef gp(expr t) = t*t enddef; def avecCrayon(expr t,c) = withpen pencircle scaled t withcolor c enddef; beginfig(1); Repere(10,10,2,1,1,1); Axes; Debut; Graduations; Unites(1); drawoptions(withcolor LightSlateGrey); trace (3,0)--(3,2)--(-1,2)--(-1,0) dashed evenly; trace (1,0)--(1,6)--(0,6) dashed evenly; trace Courbe(fp,gp,-5,5,500); trace Vecteur((-1,2),(-1,2)+(0.5,2)) avecCrayon(1,Crimson); trace Vecteur((3,2),(4,2)) avecCrayon(1,Crimson); trace Vecteur((3,2),(2,2)) avecCrayon(1,Crimson); trace Courbe(f,g,-10,-0.05,300) avecCrayon(1.5,DarkGoldenrod); trace Courbe(f,g,0.05,10,300) avecCrayon(1.5,DarkGoldenrod); pointe Point(0,0); pointe Point(-1,2); pointe Point(3,2); pointe Point(1,6); Fin; endfig; end