{"id":6642,"date":"2025-07-15T13:34:48","date_gmt":"2025-07-15T13:34:48","guid":{"rendered":"https:\/\/functiontranslator.com\/fonction-pass\/"},"modified":"2021-02-26T08:09:42","modified_gmt":"2021-02-26T08:09:42","slug":"let","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/fr\/let\/","title":{"rendered":"Pass"},"content":{"rendered":"

La fonction LET<\/strong> dans MS Excel et Google Sheets est un outil puissant qui permet de simplifier et d’am\u00e9liorer la lisibilit\u00e9 des formules complexes en d\u00e9finissant des noms pour des valeurs ou expressions. Cette fonction permet \u00e9galement d’augmenter la performance des feuilles de calcul en minimisant le nombre de recalculs pour des expressions utilis\u00e9es plusieurs fois. Voici un guide complet sur son utilisation.<\/p>\n

Introduction \u00e0 la syntaxe<\/h2>\n

La syntaxe de la fonction LET<\/code> se pr\u00e9sente comme suit :<\/p>\n

LET(nom1, nom_valeur1, [nom2, nom_valeur2, ...], calcul)<\/code><\/pre>\n
    \n
  • nom1, nom2, …<\/strong> : Ce sont les identificateurs attribu\u00e9s aux valeurs ou calculs sp\u00e9cifi\u00e9s. Ces identificateurs sont utilis\u00e9s dans le calcul final.<\/li>\n
  • nom_valeur1, nom_valeur2, …<\/strong> : Ce sont les valeurs ou les expressions auxquelles ces noms sont associ\u00e9s.<\/li>\n
  • calcul<\/strong> : C’est l’expression ou la formule finalisant l’utilisation des noms d\u00e9finis. Le r\u00e9sultat de cette expression est ce que renvoie la fonction LET.<\/li>\n<\/ul>\n
    Exemple basique :<\/p>\n
    =LET(x, 10, y, x*2, y + x)<\/code><\/pre>\n
    Dans cet exemple, x est assign\u00e9 la valeur de 10 et y celle de 20 (x*2). La formule finale, y + x, renvoie 30.<\/p>\n
    Applications concr\u00e8tes de la fonction<\/h2>\n
    Exemple 1: Calcul de moyennes conditionnelles<\/h2>\n
    Supposons que nous disposions d’une liste de notes d’\u00e9tudiants avec leur statut (r\u00e9ussite ou \u00e9chec). Nous souhaitons calculer la moyenne des notes des \u00e9tudiants ayant r\u00e9ussi.<\/p>\n
    =LET( data, A2:A100, status, B2:B100, passedGrades, IF(status=\"Pass\u00e9\", data, \"\"), averagePassed, AVERAGE(passedGrades), averagePassed )<\/code><\/pre>\n
    Explication :<\/p>\n
      \n
    • data<\/strong> correspond aux notes des \u00e9tudiants.<\/li>\n
    • status<\/strong> indique le statut de chaque \u00e9tudiant.<\/li>\n
    • passedGrades<\/strong> utilise la fonction IF pour filtrer uniquement les notes des \u00e9tudiants ayant r\u00e9ussi.<\/li>\n
    • averagePassed<\/strong> calcule la moyenne de ces notes.<\/li>\n<\/ul>\n
      Exemple 2: Optimisation de calculs r\u00e9p\u00e9titifs<\/h2>\n
      Imaginons que nous devons effectuer des ajustements sur une valeur de base d’un indicateur \u00e9conomique plusieurs fois avec diff\u00e9rentes variables ajust\u00e9es pour des pr\u00e9visions.<\/p>\n
      =LET( baseValue, 100, adjustment1, baseValue*1.05, adjustment2, baseValue*1.10, adjustment3, baseValue*1.15, \"Sc\u00e9narios: \"&CHAR(10)&\"Base: \"&baseValue&CHAR(10)&\"Ajustement 1: \"&adjustment1&CHAR(10)&\"Ajustement 2: \"&adjustment2&CHAR(10)&\"Ajustement 3: \"&adjustment3 )<\/code><\/pre>\n
      Cet exemple illustre comment la fonction LET permet de simplifier et rendre plus lisible des calculs o\u00f9 une valeur de base est ajust\u00e9e de plusieurs fa\u00e7ons.<\/p>\n","protected":false},"excerpt":{"rendered":"
      Attribue des noms aux r\u00e9sultats du calcul pour permettre le stockage de calculs interm\u00e9diaires, de valeurs ou de la d\u00e9finition de noms \u00e0 l\u2019int\u00e9rieur d\u2019une formule<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[310],"tags":[],"class_list":["post-6642","post","type-post","status-publish","format-standard","hentry","category-mathematiques-et-trigonometrie"],"acf":[],"yoast_head":"\nFonction LET (Pass) dans Excel : comment \u00e7a marche, exemples et syntaxe<\/title>\n<meta name=\"description\" content=\"Pr\u00e9sentation de la fonction LET (Pass) d\u2019Excel et Google Sheets. 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