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.dsy:it. : Powered by vBulletin version 2.3.1 .dsy:it. > Didattica > Corsi A - F > Elaborazione numerica dei segnali > [Help] Passaggio matematico
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Biffone
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 Help: passaggio matematico

ho un dubbio amletico:

se ho questo passaggio:

(1/ ((23/25)+(3i/5)))^2 come elimino la i?

questo è il passaggio fianle dell'esercizio 2 dell'esame del 6 febbraio, nel caso in cui omega=250

il risultato è 625/704

HELP !!!!!!!!!
03-04-2004 17:29
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Lunik
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fai il minimo comun divisore
e hai:

1
_________
(23+15i)/25

(leggi: 1 fratto...)

il che equivale a
25/(23+15i)

il tutto tra modulo e alla seconda...

il modulo di un numero complesso è dato da
radice quadrata di a^2 + b^2

nel numero in alto guarda chi è la a e chi è la b
considerando che un numero complesso è:
z = ai + b

e hai risolto ;)

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03-04-2004 17:44
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Biffone
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 grazie !!!!!!!!!

mitica, sono stato almeno due ore su questo passaggio !!!!

non consideravo il modulo !

Grazie di cuore
03-04-2004 18:05
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Lunik
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:sbonk:

eheheheh
di niente!!!! :D

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03-04-2004 18:14
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Lunik
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fammi sapere poi se t'è venuto...... :)
non vorrei aver detto una capperonata :oops:

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03-04-2004 18:57
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Biffone
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 esercizio

si, tutto a posto.

grazie ancora e buona serata

p.s.
io la passerò in compagnia dei vecchi temi d'esame di DSP
03-04-2004 18:59
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Lunik
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ah bene allora :)

buona serata! :)

p.s. non sarà una "buona" serata mi sa :D

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03-04-2004 19:00
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