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Forum Studenti
Sito dedicato agli studenti dei corsi tenuti da Massimo Gobbino and friends (qualunque corso può essere aggiunto)
Buongiorno, stavo svolgendo il primo esercizio di questo compito e non riuscendoci sono andato a vedere l'aiutino dove cita i punti di taglio. A seguito di questo sono andato a ripassarmi la lezione 11 ma con scarso risultato: apparte un accenno con un esempio non ho trovato altro. Dove posso trova...
Grazie :) Quindi, se ho il valore assoluto all'esterno, non devo cercare la zona positiva o negativa? Nel caso in cui il dominio sia tutto R^2.. non saprei enunciare delle regole generali...in questo caso l'integrale aveva l'aria di divergere infatti tranne che nella direzione y=x l'integranda tend...
allego lo svolgimento :?: del terzo compito 2013 Esercizio 2: Perchè esistono massimo e minimo? mi pare che allo svolgimento si debba aggiungere questo: oltre a quanto già osservato ai bordi, risulta: \lim_{x \to +\infty} f(x,y) \leq \lim_{x \to +\infty} \frac{1}{1+0+x} = 0 pertanto, essend...
Mmmm :? A grandi linee ho capito ma lo studio con f(x) e g(x) mi ha turbato, suppongo che sia programma di analisi uno, dovrò riguardarmela :cry: comunque grazie mille :D esatto...in effetti ci si riconduce sempre ad integrali del tipo di analisi 1...il confronto asintotico è spiegato nella lez. 77...
Buonasera, non riesco a valutare i valori di \alpha per cui il seguente integrale converga: $\[\int_{\mathbb {R}^2} \frac {1}{7+(x^2+y^2)^{\alpha}}dxdy\]$ Passando in coordinate polari cartesiane e svolgendo arrivo a questo punto: $\[2\pi\int_0^\infty \frac {\rho}{7+\rho^{2\alpha}}d\rho\]$ ...