Valeurs absolues

[oscar]

Bonjour

Tu confonds l' expression valeur absolue et valeur interdite

Valeur absolue de -3 = 3ou |-3| =3
Valeur interdite: valeur de x qui annule un dénominateur par exemple
Il s' agit de FONCTIONS

C' est ce que tu as voulu présenter

Pour f(x)= 1/ (2x-12) la valeur interdite est x = 6 car alors 2x-12 =0

Il y a des erreurs..

Pour x²-4=0 par ex : S =2 car -2 est interdite

Revérifie: il y a très peu de fautes

[Mypemelve]

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