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UBA - CienciaS :: Ver Tema - FINAL DEL 16/12/2008
UBA - CienciaS
http://ubacs.com.ar/ubacs/

FINAL DEL 16/12/2008
http://ubacs.com.ar/ubacs/viewtopic.php?f=39&t=789
Página 2 de 2

Autor:  Juosja [ 29 Dic 2008, 11:34 ]
Asunto:  Re: FINAL DEL 16/12/2008

A ver gente; estuve mirando mirando sus resoluciones del ejercicio 5. Les comento un poco como lo pensé, y me dicen que tengo mal...

Yo lo pensé como Axel. Entonces:


Es evidente que ya que y . Entonces digo:
. Como las raices de son y , y esas son las unicas raices que pertenecen a solo me queda dividir el polinomio (que es una division muy simple) por o sea y eso me da:
y ese es mi polinomio factorizado en .
Si multiplican sus resultados, da ese polinomio que tengo arriba.

Esta bien este razonamiento? Le estoy pifiando en algo?
Espero respuestas!! GRACIAS!!!

Autor:  Juosja [ 29 Dic 2008, 12:18 ]
Asunto:  Re: FINAL DEL 16/12/2008

Ya esta!! Axel me explicó cual era mi error!! no tiene raices en pero si es reducible, y ahi esta mi gravisimo error!!

GRACIAS AXEL!!

Autor:  santiago-kun [ 29 Dic 2008, 15:31 ]
Asunto:  Re: FINAL DEL 16/12/2008


Autor:  axelbrz [ 29 Dic 2008, 16:18 ]
Asunto:  Re: FINAL DEL 16/12/2008

Claro, como dice santiago-kun, por ser una raíz sexta primitiva de la unidad, entonces y , por lo que vale el primer paso.

Luego al final cuando llegás a que , se puede terminar así:

Autor:  Erizo [ 25 Nov 2009, 00:46 ]
Asunto:  Re: FINAL DEL 16/12/2008

Perdón que reflote topics viejos pero voy a rendir mañana y quiero estar preparado. mientras hago los ejercicios, los posteo a ver que onda.

Para el 3 se me ocurrió:


Autor:  Quimey [ 25 Nov 2009, 10:53 ]
Asunto:  Re: FINAL DEL 16/12/2008

No entiendo muy bien que estas haciendo pero:

Autor:  aye [ 22 Feb 2010, 22:39 ]
Asunto:  Re: FINAL DEL 16/12/2008

escribo lo que pensé para el 3) (acá uso mucho las ideas de axelbrz, pero no entiendo como él llega a la igualdad)

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