{"id":96,"date":"2007-06-25T22:43:20","date_gmt":"2007-06-25T20:43:20","guid":{"rendered":"http:\/\/wordpress.callac.online\/index.php\/comment-tracer-une-courbe-de-fonction\/"},"modified":"2023-10-14T20:12:45","modified_gmt":"2023-10-14T18:12:45","slug":"comment-tracer-une-courbe-de-fonction","status":"publish","type":"page","link":"https:\/\/wordpress.callac.online\/index.php\/edition-mathematique\/metapost\/divers\/comment-tracer-une-courbe-de-fonction\/","title":{"rendered":"Comment tracer une courbe de fonction ?"},"content":{"rendered":"<p>Personnellement, j&rsquo;ai choisi de me baser une fois de plus sur le travail effectu\u00e9 par Christophe Poulain. C&rsquo;est ainsi que tous mes fichiers font appel \u00e0 <a href=\"https:\/\/melusine.eu.org\/syracuse\/poulecl\/macros\/?src=courbescp13.mp\"><strong>courbescp13.mp<\/strong><\/a> dont vous trouverez une pr\u00e9sentation <a href=\"http:\/\/melusine.eu.org\/syracuse\/poulecl\/comment\/doccourbescp\/doccourbescp.html\">ici<\/a>.<\/p>\n<p>J&rsquo;ai compl\u00e9t\u00e9 ce travail par des macros personnels que vous trouverez dans le fichier <strong>dlf_courbe.mp<\/strong> disponible dans <a href=\"https:\/\/wordpress.callac.online\/index.php\/edition-mathematique\/metapost\/gedit-mon-editeur-metapost\/mes-fichiers-personnels-metapost\/\">cet article<\/a>.<\/p>\n<p>L\u00e0 encore, l&rsquo;id\u00e9e est de partir d&rsquo;un exemple pour pouvoir rapidement obtenir ce que l&rsquo;on veut.<\/p>\n<p>Voici un premier exemple :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" aligncenter size-full wp-image-605\" src=\"http:\/\/wordpress.callac.online\/wp-content\/uploads\/2007\/06\/jpg_courbes1.jpg\" alt=\"courbes1.jpg\" width=\"405\" height=\"511\" align=\"center\" srcset=\"https:\/\/wordpress.callac.online\/wp-content\/uploads\/2007\/06\/jpg_courbes1.jpg 405w, https:\/\/wordpress.callac.online\/wp-content\/uploads\/2007\/06\/jpg_courbes1-238x300.jpg 238w\" sizes=\"auto, (max-width: 405px) 100vw, 405px\" \/><\/p>\n<p>Voici son code:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">input courbescp13;\ninput dlf_courbe.mp;\n\nbeginfig(1);\n  numeric xmin,xmax,ymin,ymax;\n  xmin:=-1;\n  ymin:=-5;\n  xmax:=10;\n  ymax:=9;\n  numeric unitex,unitey;\n  unitex:=1;\n  unitey:=1;\n  \ndepart((xmin,ymin),(xmax,ymax),(0,0),unitex,unitey);\n%draw millimetrepourcourbe withcolor orange;\ndraw grille(1) withcolor gris;\ndraw reperelycee withpen pencircle scaled 1.5bp;\ngraduationx.bot(xmin,xmax,1);\ngraduationy.lft(ymin,ymax,1);\n\n%courbe 1\ndraw courbe1(0.1,10,100,x-2-(ln(x)\/x)) withcolor bleu;\nlabel.lrt(TEX \"$({\\cal C}_f)$\",pointcourbe1(5));\n\n%legende\nlabel.lft(TEX \"\\begin{tabular}[t]{|l|} \\hline \\\\$({\\cal C}_f): y = x-2-\\dfrac{\\ln x}{x}$\\\\$(d_1): x=0$\\\\$(d_2):y=3$\\\\ $(\\Delta):y=x-2$~\\\\ \\hline \\end{tabular}\",placepoint(xmax,ymin+2));\n\n\n\n%asymptote oblique\npath asym;\nasym = courbe3(-1,10,100,x-2);\npair a,b;\na:=pointcourbe3(xmin);\nb:=pointcourbe3(xmax);\ndraw Asymptote(a,b) dashed evenly withpen pencircle scaled 1.5bp;\nlabel.lft(TEX \"$(\\Delta)$\",pointcourbe3(xmax-1));\n\n%asymptote verticale\nnumeric xa;\nxa:=0;\ndraw Asymptote(placepoint(xa,ymin),placepoint(xa,ymax)) withcolor vert withpen pencircle scaled 1.5bp;\nlabel.lft(TEX \"$(d_1)$\",placepoint(xa,ymax-1));\n\n%asymptote horizontale\nnumeric xv;\nxv:=3;\ndraw Asymptotedouble(placepoint(xmin,xv),placepoint(xmax,xv)) withcolor violet withpen pencircle scaled 1.5bp;\nlabel.bot(TEX \"$(d_2)$\",placepoint(xmax-1,xv));\n\n%tangente\nmarque_tan:=50;\ndraw tangente1(1);\n\n%point particulier\ndraw Projection(pointcourbe1(1));\ndotlabel.bot(btex $A$ etex,pointcourbe1(1));\n\n\nendfig;\n\nend<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Personnellement, j&rsquo;ai choisi de me baser une fois de plus sur le travail effectu\u00e9 par Christophe Poulain. C&rsquo;est ainsi que tous mes fichiers font appel \u00e0 courbescp13.mp dont vous trouverez&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2414,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-96","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comment tracer une courbe de fonction ? - Maths &amp; Num\u00e9rique<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wordpress.callac.online\/index.php\/edition-mathematique\/metapost\/divers\/comment-tracer-une-courbe-de-fonction\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comment tracer une courbe de fonction ? - Maths &amp; Num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"Personnellement, j&rsquo;ai choisi de me baser une fois de plus sur le travail effectu\u00e9 par Christophe Poulain. 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