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UBA - CienciaS :: Ver Tema - [No resuelto}Ej 19 Práctica 8
UBA - CienciaS
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[No resuelto}Ej 19 Práctica 8
http://ubacs.com.ar/ubacs/viewtopic.php?f=63&t=1717
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Autor:  Erizo [ 10 Dic 2009, 17:33 ]
Asunto:  [No resuelto}Ej 19 Práctica 8






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

Autor:  Nacho84 [ 10 Dic 2009, 22:36 ]
Asunto:  Re: [No resuelto}Ej 19 Práctica 8

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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