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+1/t enddef; vardef fp(expr t) = t*t enddef; vardef gp(expr t) = t enddef; def avecCrayon(expr t,c) = withpen pencircle scaled t withcolor c enddef; beginfig(1); Repere(12,10,5,4,0.7,0.7); Axes; Debut; Graduations; Unites(1); drawoptions(withcolor LightSlateGrey); trace Droite(Point(-4,-2),Point(4,2)); trace (3,0)--(3,2)--(0,2) dashed evenly; trace (-1,0)--(-1,-2)--(0,-2) dashed evenly; trace Courbe(fp,gp,-4,4,500); trace Vecteur((3,2),(5,8/3)) avecCrayon(1,DeepPink); trace Vecteur((-1,-2),(-2.8,-2)) avecCrayon(1,DeepPink); trace Vecteur((-1,-2),(0.8,-2)) avecCrayon(1,DeepPink); trace Courbe(f,g,-5,-0.1,100) avecCrayon(1.5,DarkCyan); trace Courbe(f,g,0.1,5,100) avecCrayon(1.5,DarkCyan); pointe Point(0,0); pointe Point(3,2); pointe Point(-1,-2); Fin; endfig; end