Forum Studenti •Dubbio Funzioni 5

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Forum Studenti •Dubbio Funzioni 5

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Dubbio Funzioni 5

Inviato: domenica 23 dicembre 2007, 21:05

da Lethal Dosage_88

Buonasera professore,
ho un dubbio riguardo all'esercizio numero 6 di Funzioni 5.
Si chiede la controimmagine di xe^x quando f(x) varia in (-1/e,e).
Lei come risposta indica (-infin , -1) U (-1,1).
Formalmente Ã¨ corretta anche la risposta (-inf,1)??
Grazie in anticipo e Buone feste!!

Re: Dubbio Funzioni 5

Inviato: mercoledì 2 gennaio 2008, 9:12

da Massimo Gobbino