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headers already sent by (output started at [ROOT]/includes/functions.php:3887) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4789: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4790: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4791: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887) UBA - CienciaS • Ver Tema - Final 20/12/2013
Registrado: 02 Mar 2010, 17:51 Mensajes: 6 Ubicación: Glorioso Barrio de Boedo
Salió un poco borrosa, pero espero que se entienda, cualquier cosa me preguntan.
Si alguien se presta a resolver el item 1.b.ii se agradece. Lo mismo si saben donde hay una demostración formal del 3.a.
Bea
Asunto: Re: Final 20/12/2013
Publicado: 21 Dic 2013, 23:54
Vago
Registrado: 17 Dic 2013, 10:21 Mensajes: 5
Gracias!!!
La demo no es la de la página 28 del apunte de Wolanski?
Daneel
Asunto: Re: Final 20/12/2013
Publicado: 22 Dic 2013, 00:10
Vago
Registrado: 22 Dic 2013, 00:07 Mensajes: 8
el 1bii sale planteando una curva arbitraria con una circunferencia adentro. En la región delimitada por ambas curvas vale Green (porque el circunferencia saca al origen como un sacabocados y por lo tanto sabés que la suma de la integral sobre ambas curvas (una de ellas en sentido negativo) es nula. Como sabés, por el 1bi que la integral sobre la circunferencia vale -2Pi, entonces la integral sobre la curva arbitraria vale también -2pi QED
Andresss
Asunto: Re: Final 20/12/2013
Publicado: 22 Dic 2013, 11:13
Vago
Registrado: 02 Mar 2010, 17:51 Mensajes: 6 Ubicación: Glorioso Barrio de Boedo
Sí, recién me fije y es el de la página 28. Es una version alternativa a la de los vectores son li si y solo son li evaluados en un punto cualquiera. Y el de la curva era fácil y no me cuenta. Estaba pensando en otra cosa.
De todas formas aprobé
Daneel
Asunto: Re: Final 20/12/2013
Publicado: 22 Dic 2013, 15:03
Vago
Registrado: 22 Dic 2013, 00:07 Mensajes: 8
A ver si hice bien el 3a
Supongo que Si tengo
El sistema tiene sólo solución no trivial sii
Lo cual es falso por hipótesis, por lo que la única solución del sistema es que y por lo tanto son l.i.
Ahora supongo que es l.i. Esto significa que si tengo
La única solución es la trivial
Lo que significa que
En realidad me parece que la doble demostración es innecesaria por el "sii" de la primera demostración, pero bueno.
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