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Gioe
.grande:maestro.

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[Help] Asintotico ed o-piccolo

Io ho un problemino con gli asintotici e gli o-piccolo.

sapendo che f(x)~g(x) se f(x)/g(x) = 1 e f(x)=o(g(x)) se f(x)/g(x) = 0

come trovo la g(x)? ad occhio? c'è qualche formula? ci sono i casi più comuni? se si quali sono? grazie in anticipo

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23-04-2007 15:54
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DarkStalker
.consigliere.

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Non ricordo l'o-piccolo (ma penso che la regola valga per entrambi).
In pratica tramite il confronto tra limiti devi pescare quello che cresce piu' rapidamente.

esempio:

lim di x -> +infinito x^4 + x^2 +7 e' asintotico a x^4 perche' cresce piu' rapidamente degli altri e quindi "li porta su" tutti.

02-05-2007 15:58
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