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ESERCIZIO -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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[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable
ho svolto e-alla e ho considerato l'esponente, ossia 1/sinx*log(cosx),..
ora per x->0 log(cosx)->0...
e 1/sinx?
moltiplicabndo e dividendo per x, ottengo 1/x*x/sinx...
ora x/sinx->1 giusto?ma c'è il problema di 1/x che per x->0 tenderebbe a +oo...
come fare???
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Ponendo y=cos(x) - 1 hai che quando x->0 allora y-> 0, quindi puoi usare il limite notevole su quel pezzo. Ti ritrovi a dover "sistemare" l'esponente
((log(1 + cos(x) - 1))/ (cos(x) - 1))*((cos(x) - 1)/sin(x))).
A questo punto il log è sistemato, basta moltiplicare e dividere per x per sistemare l'altra parte........
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