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UBA - CienciaS • Ver Tema - [no resuelto] 2º parcial 1r cuatri 2003
UBACS Q&A Foro WikiCS
Fecha actual 01 May 2024, 05:43

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 Asunto: [no resuelto] 2º parcial 1r cuatri 2003
NotaPublicado: 19 Jul 2009, 16:55 
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Registrado: 08 Ago 2008, 21:57
Mensajes: 299
El ejercicio dice:
es diagonalizable. Probar que A es diagonalizable.
b) Mostrar una A no inversible y no diagonalizable tal que sí es diagonalizable

Ayuda para esto...


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 Asunto: Re: [no resuelto] 2º parcial 1r cuatri 2003
NotaPublicado: 19 Jul 2009, 17:59 
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Registrado: 17 May 2008, 23:04
Mensajes: 812
Primero hago la parte b), y luego la a):
b)

a)

La última parte está algo charlada. Fijate que escribirlo bien no es muy difícil. Puse primero el b) para mostrar por qué era necesaria la hipótesis de inversible en a) y cómo usarla. Si no queda claro, avisá.
Saludos.



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I offer her that kernel of myself that I have saved, somehow; the central heart that deals not in words, traffics not with dreams and is untouched by time, by joy, by adversities
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 Asunto: Re: [no resuelto] 2º parcial 1r cuatri 2003
NotaPublicado: 19 Jul 2009, 18:07 
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Registrado: 08 Ago 2008, 21:57
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sublime!!!

sigo posteando...


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 Asunto: Re: [no resuelto] 2º parcial 1r cuatri 2003
NotaPublicado: 20 Jul 2009, 13:00 
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Registrado: 08 Ago 2008, 21:57
Mensajes: 299
Una dudilla...

no entendí por qué el subbloque elegido tiene que ser nilpotente. ¿No podría ser, por ejemplo, de esta manera: ?
En tal caso no sería nilpotente el bloque y no tiene por qué dejar un cero en la diagonal cualdo lo elevás al cuadrado.

Bueno si me aclaran esto joya!

Feliz dia


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