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0m4r
.grande:maestro.

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 [Matematica Discreta] MATRICE A CHIOCCIOLA!

ciao, scuaste se la mia richiesta per molti sarà idipota ed impecille ma non immaginate quanto sono bravo in matematica.

Volevo chiedere a voi luminari di luminarmi. Come cavolo si calcola il determinante di una matrice di questo tipo:

code:
  
 a  b  c
 d  e  f


oppure della sua trasposta:
code:
  
 a  d
 b  e   
 c   f


(spero di avere scritto la trasposta in modo corretto)

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15-09-2003 18:11
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lorenzo
...ma anche no.

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Sapevo che per calcolare il determinante di una matrice questa deve essere quadrata.

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15-09-2003 18:14
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0m4r
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quindi per questa matricw non si puo calcolare il determinante?
allora non è neanche invertibile?

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15-09-2003 18:15
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lorenzo
...ma anche no.

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Direi proprio di no.

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15-09-2003 18:17
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CLod
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ma allora xkè a te te lo aveva messo nell'esame?

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15-09-2003 18:18
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Lunik
dsy core staff

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magari c'era il tranello :D

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15-09-2003 18:55
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LazerPhEa
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Infatti non si può calcolare il determinante su una matrice non quadrata...al più puoi estrarre dei minori da essa.

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15-09-2003 18:59
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AlphaGamma
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Originally posted by 0m4r
quindi per questa matricw non si puo calcolare il determinante?
allora non è neanche invertibile?


Eh no. Magari ti chiedeva il rango.

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15-09-2003 19:21
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0m4r
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e il rango come si calcola?
il determinante della matrice ottenuta dal prodotto fra le due matrici che ho scritto si puo fare vero dato che risulta una matrice 3x3 (prodotto righe per colonne naturalmente)

insomma, la mia ignoranza è piu infinito, l'avrete capito, ma portate pazienza!

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15-09-2003 20:08
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LazerPhEa
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Il rango di una matrice è infatti l'ordine massimo dei minori non nulli da essa estraibili.

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15-09-2003 21:01
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0m4r
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Lazer ti stupirò, ma, (qui ci devi mettere un po di suspance) lo sapevo!!

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15-09-2003 21:03
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LazerPhEa
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:oops: Scusa! Allora ero rimasto quì:

e il rango come si calcola?

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15-09-2003 21:06
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CLod
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io mi sento ancora + ignorante.. e 23 c'è esame... :/

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15-09-2003 21:25
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fozzy
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io invece rido ...

... perchè sono laureato e non sto capendo una mazza di quel che dite... :rotfl: :rotfl:

(sarà la birra?)


a dire il vero ho capito... ma non ricordo assolutamente nulla. :D

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15-09-2003 21:37
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Mistrani
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Originally posted by fozzy
io invece rido ...

... perchè sono laureato e non sto capendo una mazza di quel che dite... :rotfl: :rotfl:

(sarà la birra?)


a dire il vero ho capito... ma non ricordo assolutamente nulla. :D


Confermo e sottoscrivo... dove devo mettere la firma? :lol:

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