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Counter65
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Esame 15/09/09 Soluzioni esercizi

Ce la facciamo a a scrivere la risoluzione corretta di tutti gli esercizi del ocmpito di oggi? :) ora recupero qualcosa di quello che ho fatto io dall brutta...

15-09-2009 17:39
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Ghins
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A me uscivano i se guenti risultati(metto quelli che ricordo xche nn li ho scritti) XD:
1)Sup e max = p greco , inf e min =0
2)Il limite = 1/3
3)DOM [-3,-2)U(2,+inf)
4)2/3 o 3/2 nn ricordo...
5)derivabile per beta = p greco/2 alfa = 0
6) (1-radice3)/2 minimo ass,(1+radice3)/2
7)nn ricordo e credo sia sbagliato
8)nn completato
9)Converge in a=(-inf,-1)U(1,inf)
10)non ricordo

16-09-2009 12:37
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Counter65
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io ho sbagliato quasi tutto :)

il 7 e 8 mi ritrovavo col fare calcoli che non portavan da nessuna parte, ma soprattuto il 7 come cavolo si faceva? sviluppando usciva un macello di roba ingestibile....

16-09-2009 16:58
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gab217
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Originally posted by Ghins
A me uscivano i se guenti risultati(metto quelli che ricordo xche nn li ho scritti) XD:
1)Sup e max = p greco , inf e min =0
2)Il limite = 1/3
3)DOM [-3,-2)U(2,+inf)
4)2/3 o 3/2 nn ricordo...
5)derivabile per beta = p greco/2 alfa = 0
6) (1-radice3)/2 minimo ass,(1+radice3)/2
7)nn ricordo e credo sia sbagliato
8)nn completato
9)Converge in a=(-inf,-1)U(1,inf)
10)non ricordo


Mi spieghi come hai risolto il 5

16-09-2009 21:44
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Ghins
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Originally posted by gab217
Mi spieghi come hai risolto il 5


Inanzitutto devi guardare la continuità in x=0 visto che le due funzioni si incontrano in 0
Quindi ti trovi il limite destro e sinistro per x-->0
E vedi che arctg (1/x) per x-->0+ =pi/2 mentre per x-->0- Beta
Quindi per essere continua in x=0 Beta deve essere uguale a pi/2
Dopo fai la derivata,trovi sempre limite destro e sinistro in x=0 e vedi che per coincidere alfa deve essere uguale a 0
Quindi ris finale alfa=0 beta=pi/2

17-09-2009 04:09
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gennaro
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qualcuno sa come si risolveva l'esercizio 2???

molti hanno provato ad usare gli asintotici, il problema è che nn si posso usare siccome c'è una somma/differenza...

20-09-2009 17:18
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Counter65
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non sono riuscito a farlo ma c'è sicuramente un limite notevole li dentro...

21-09-2009 10:58
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Counter65
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nessuno sa come risolvere il 2 e il 7?

23-09-2009 13:10
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gab217
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Originally posted by Counter65
nessuno sa come risolvere il 2 e il 7?


Mi aggrego alla richiesta e vorrei sapere anche gli es 3 4 6 8

24-09-2009 14:44
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gab217
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Originally posted by Ghins
A me uscivano i se guenti risultati(metto quelli che ricordo xche nn li ho scritti) XD:
1)Sup e max = p greco , inf e min =0
2)Il limite = 1/3
3)DOM [-3,-2)U(2,+inf)
4)2/3 o 3/2 nn ricordo...
5)derivabile per beta = p greco/2 alfa = 0
6) (1-radice3)/2 minimo ass,(1+radice3)/2
7)nn ricordo e credo sia sbagliato
8)nn completato
9)Converge in a=(-inf,-1)U(1,inf)
10)non ricordo


Mi spieghi il 2

25-09-2009 10:55
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