{"id":3242,"date":"2016-02-07T09:39:24","date_gmt":"2016-02-07T08:39:24","guid":{"rendered":"https:\/\/abcdr.guyader.pro\/?p=3242"},"modified":"2018-04-08T00:02:29","modified_gmt":"2018-04-07T23:02:29","slug":"comment-tracer-la-courbe-dune-fonction-connue-dans-un-intervalle-donne-curve","status":"publish","type":"post","link":"https:\/\/thinkr.fr\/abcdr\/comment-tracer-la-courbe-dune-fonction-connue-dans-un-intervalle-donne-curve\/","title":{"rendered":"Comment tracer la courbe d'une fonction connue dans un intervalle donn\u00e9 ? curve()"},"content":{"rendered":"

R peut tracer la courbe d’une fonction f(x) pour peu qu’on connaisse sa formule et qu’on lui fixe des bornes.<\/p>\n

\u00a0curve(expr=1\/(sqrt(2*pi)*0.3)*exp(-((x-0)^2\/(2*0.3^2))), from=-1.5, to= 1.5)<\/code><\/pre>\n
La fonction\u00a0curve() prend (entre autres) comme argument expr (l’expression de la fonction, ici la densit\u00e9 de probabilit\u00e9 de la loi normale), from (la borne inf\u00e9rieure de l’intervalle \u00e0 tracer) et to (la borne sup\u00e9rieure de l’intervalle \u00e0 tracer)
\nPar d\u00e9faut\u00a0curve() utilise un param\u00e8tre n fix\u00e9 \u00e0 101 : c’est le nombre de x compris entre from et to qui seront \u00e9valu\u00e9s par l’expression renseign\u00e9e dans expr. Plus n est petit, plus la courbe sera \u00ab\u00a0anguleuse\u00a0\u00bb<\/p>\n","protected":false},"excerpt":{"rendered":"
R peut tracer la courbe d’une fonction f(x) pour peu qu’on connaisse sa formule et qu’on lui fixe des bornes. \u00a0curve(expr=1\/(sqrt(2*pi)*0.3)*exp(-((x-0)^2\/(2*0.3^2))), from=-1.5, to= 1.5) La fonction\u00a0curve() prend (entre autres) comme argument expr (l’expression de la fonction, ici la densit\u00e9 de probabilit\u00e9 de la loi normale), from (la borne inf\u00e9rieure de l’intervalle \u00e0 tracer) et to (la borne sup\u00e9rieure de l’intervalle \u00e0 tracer) Par d\u00e9faut\u00a0curve() utilise un param\u00e8tre n fix\u00e9 \u00e0 101 : c’est le nombre de x compris entre from et to qui seront \u00e9valu\u00e9s par l’expression renseign\u00e9e dans expr. Plus n est petit, plus la courbe sera \u00ab\u00a0anguleuse\u00a0\u00bbRead More →<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":{"twitter_399453572_399453572":""},"rop_publish_now_history":[],"rop_publish_now_status":"pending","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8,9],"tags":[],"class_list":{"0":"entry","1":"post","2":"publish","3":"author-diane","4":"post-3242","6":"format-standard","7":"category-fonctions-utiles","8":"category-graphique"},"acf":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p9O7Sx-Qi","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/comments?post=3242"}],"version-history":[{"count":2,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3242\/revisions"}],"predecessor-version":[{"id":4305,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3242\/revisions\/4305"}],"wp:attachment":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/media?parent=3242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/categories?post=3242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/tags?post=3242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}