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.dsy:it. : Powered by vBulletin version 2.3.1 .dsy:it. > Didattica > Corsi A - F > Elaborazione numerica dei segnali > [HELP] fase di un numero negativo
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cia
Mago Ninja

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Originally posted by pinauz
esempio ho

3 + e^i2p5t

devo calcolare c5 ma anche c0 relativo a 3 no?


no... non te ne fai nulla... (correggetemi se sbaglio:D)

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05-06-2006 20:39
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-MICKY-
.grande:maestro.

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Originally posted by tux83
[B]guarda lo specchietto...fa sempre così...

4-i = -Pi/4




Okkio questa fase è sbagliata..

La fase di questo numero complesso è arctg-1/4.. che non fa -p/4!
05-06-2006 20:58
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.grande:maestro.

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Cmq non capiterà mai..
sono sempre angoli noti!
05-06-2006 20:59
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pinauz
.grande:maestro.

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ho postato la soluzione dell'esercizio 2 dell'11 aprile 2006
http://www.dsy.it/forum/showthread....0492#post380492
ditemi se vi sembra giusto

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05-06-2006 21:22
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cia
Mago Ninja

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Originally posted by pinauz
ho postato la soluzione dell'esercizio 2 dell'11 aprile 2006
http://www.dsy.it/forum/showthread....0492#post380492
ditemi se vi sembra giusto


a me pare che dovrebbe essere -1/4 (in quanto i x i dà -1) e non i/4 e così cambia un po' il resto...

ma ho ancora dubbi...

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05-06-2006 21:26
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.grande:maestro.

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dalla moltiplicazione viene come coefficiente 1/4i^2 e non 1/4i
05-06-2006 21:26
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.grande:maestro.

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di conseguenza anche il resto è da rifare..
05-06-2006 21:28
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pinauz
.grande:maestro.

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hai ragione...
fan***o

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05-06-2006 21:29
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1/4i^2 razionalizzato diventa -1/4..
05-06-2006 21:29
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Mago Ninja

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Originally posted by -MICKY-
1/4i^2 razionalizzato diventa -1/4..


benissimo allora, quindi pare che abbia capito... uau come sono bravo...:cool:

micky, la fase di questo esercizio ti viene pigreco?

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05-06-2006 21:31
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essendo il coefficiente sempre -1/4, si la fase è sempre pigreco..
05-06-2006 21:34
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pinauz
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non è sempre -1/4
c'è anche 1/4

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05-06-2006 21:40
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Mago Ninja

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Originally posted by pinauz
non è sempre -1/4
c'è anche 1/4


edit: già, quindi cosa succede?

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Last edited by cia on 05-06-2006 at 21:47
05-06-2006 21:45
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.grande:maestro.

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è vero.. quindi a 1/4 la fase è zero..
05-06-2006 21:47
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.grande:maestro.

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l'ho postato "corretto" provate a dare un occhio?

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05-06-2006 21:48
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