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UBA - CienciaS • Ver Tema - [No resuelto}Ej 19 Práctica 8
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 Asunto: [No resuelto}Ej 19 Práctica 8
NotaPublicado: 10 Dic 2009, 17:33 
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Registrado: 26 Mar 2009, 14:25
Mensajes: 155
Ubicación: Villa Luro!





Lo único que atiné a hacer es diagonalizar la matriz y sacar un autoespacio, dado que se que el autoespacio tiene vectores ortogonales.
De todas formas no entiendo que quiere que sea ortogonal. Quiere que O sea ortogonal a A?... Además, con que producto interno?

Bueno, no se, pongo los autovectores y autovalores por si ayuda







Un saludo y gracias



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 Asunto: Re: [No resuelto}Ej 19 Práctica 8
NotaPublicado: 10 Dic 2009, 22:36 
Vago

Registrado: 14 Ago 2009, 19:37
Mensajes: 9
No podés asegurar que los autoespacios tengan vectores ortogonales. Para las autoadjuntas sí podés asegurar.

Una matriz O es ortogonal sii (Definición)

O visto de otra manera, por como está definido el producto de matrices, equivale a pedir que las columnas de O sean base ortogonal de

Vos ya tenés los 2 vectores ortogonales. Te falta normalizarlos.

Luego, la matriz que buscás no es más que el cambio de base .

Y además (por ser matriz ortogonal)

Perdón por escribir así pero nunca usé el editor de fórmulas (EDIT: No es muy difícil, fijate como esta editado.)


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