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Forum Studenti •Mi spiegate una cosa?
Pagina 1 di 1

Mi spiegate una cosa?

Inviato: mercoledì 29 agosto 2012, 17:23
da ProfGobbinoForPresident
Ciao a tutti,

limite per (x,y) tendenti a (0,0) di una frazione, avente numeratore (x^3 + 2xy^2) e denominatore (x^2 + y^2): devo dimostrare che è uguale a 0.

Perchè non mi dovrebbe bastare sostituire (0,0) a (x,y) ed ottenere così 0? Perchè ricadrei nella forma indeterminata 0/0, con cui non posso "risolvere" il limite?

Grazie anzitempo,
P.G.F.P.

Re: Mi spiegate una cosa?

Inviato: mercoledì 29 agosto 2012, 19:47
da Massimo Gobbino