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120: include(): Failed opening '/home/a009199/public_html/Forum/Studenti/latexrender/phpbb_hook_2.php' for inclusion (include_path='.:/usr/share/php') [phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 120: include(/home/a009199/public_html/Forum/Studenti/latexrender/phpbb_hook_2.php): failed to open stream: No such file or directory [phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 120: include(): Failed opening '/home/a009199/public_html/Forum/Studenti/latexrender/phpbb_hook_2.php' for inclusion (include_path='.:/usr/share/php') [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 5284: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 5284: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 5284: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3903) Funzioni 13 -Forum Studenti
Forum Studenti
Sito dedicato agli studenti dei corsi tenuti da Massimo Gobbino and friends (qualunque corso può essere aggiunto)
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Ciao! Spero di essere nella sezione giusta! Riguardando esercizi sulle funzioni, ho trovato difficoltà nel risolvere l'esercizio 3 della scheda "funzioni 13". C'è qualcuno che potrebbe darmi una mano?
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Gimusi, grazie! Mi trovo d'accordo con il tuo svolgimento, c'è solo una cosa che non mi torna.. Ho provato a svolgere la seconda parte studiando la funzione inversa a quella che hai studiato tu, ma ho trovato risultati contrastanti e non riesco ad individuare l'errore.. Allego il mio risultato (lo svolgimento è piuttosto "brutale", ma dovrebbe essere chiaro).
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figurati...sono venuti dei dubbi anche a me...credo di non aver precisato tutto per bene nemmeno io...ci voglio riguardare meglio
ad esempio nel punto (a) forse avrei dovuto precisare "f(x) è limitata inferiormente con inf(f) > 0"
in generale, come segnalato a lezione dal prof, direi che bisogna prestare attenzione nel passaggio dalla diseguaglianza originaria a quella "derivata" ottenuta dividendo per fattori non necessariamente positivi
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