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Latest posts from topic “Identità che non capisco” Latest posts from topic “Identità che non capisco” on “ElectroYou”. 2021-02-06T13:17:55Z https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p878807 Ianero 2021-02-20T11:57:36Z 2021-02-20T11:57:36Z
Finita così?
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877442 Ianero 2021-02-06T15:06:22Z 2021-02-06T15:06:22Z
[quote="Ianero"]In particolare, le due espressioni sono identiche se accade che: [unparseable or potentially dangerous latex formula]. Se faccio i passaggi però ottengo che:

[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

dunque a questo punto il primo addendo alla fine dovrebbe essere nullo, ma non capisco perché.
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877432 PietroBaima 2021-02-06T13:50:58Z 2021-02-06T13:50:58Z
ora, se tu e il libro avete entrambi ragione, cosa deve essere?
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877429 Ianero 2021-02-06T13:44:49Z 2021-02-06T13:44:49Z
[unparseable or potentially dangerous latex formula]
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877428 PietroBaima 2021-02-06T13:34:59Z 2021-02-06T13:34:59Z
ok, comincia a esplicitare k
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877427 Ianero 2021-02-06T13:32:50Z 2021-02-06T13:32:50Z
Ma non possiamo lasciar perdere il 'mistero'?
Ci ho pensato a lungo prima di scrivere qui: mi serve una mano, per favore, fine.
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877426 PietroBaima 2021-02-06T13:29:25Z 2021-02-06T13:29:25Z
che relazione c’è fra i soliti sospetti?
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877425 Ianero 2021-02-06T13:27:48Z 2021-02-06T13:27:48Z
j\frac{\nabla\cdot\mathbf{J}}{\omega\epsilon_0}\nabla\psi-j\omega\mu_0\psi \mathbf{J}

E quindi?
Lui parla di \mathbf{J}\cdot\nabla.
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877424 PietroBaima 2021-02-06T13:25:43Z 2021-02-06T13:25:43Z
sostituisci nella prima formula...
 Re: Identità che non capisco https://www.electroyou.it/forum/viewtopic.php?f=7&t=83268#p877423 Ianero 2021-02-06T13:17:55Z 2021-02-06T13:17:55Z
Mica ho capito...
Scusate, ma non ho fatto nessun progresso.