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UBA - CienciaS • Ver Tema - Consultas final 23/12/14
UBACS Q&A Foro WikiCS
Fecha actual 12 May 2024, 00:10

Todos los horarios son UTC - 3 horas




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 Asunto: Consultas final 23/12/14
NotaPublicado: 24 Jul 2015, 21:05 
Vago

Registrado: 24 Jul 2015, 19:52
Mensajes: 9
Hola, tengo unas consultas sobre un par de ejercicios del final del 23/12/14.

Acá dejo las consignas y lo que planteé para que vean si hay algún error.
(Perdonen pero no sé usar latex jaja)

En el punto 2 llego a que nunca 2^n es congruente a 1 módulo 6 y a 2 módulo 7 al mismo tiempo. Entonces no existe ningun n tal que dn = D = 42?

En el punto 3, no sé, llego a varias conclusiones respecto a n pero no entiendo como seguir.

Gracias!!


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 Asunto: Re: Consultas final 23/12/14
NotaPublicado: 26 Jul 2015, 17:01 
Vago

Registrado: 23 Jul 2015, 19:31
Mensajes: 6
Revise el 1, y esta bien pero creo que no lo terminaste. Si no existe n, entonces 42 es el dcm.
Creo yo que no podes asumir que todos los divisores de 42 son divisores de esos dos terminos, es por eso que lo descarte.
Y despues me hice una tablita identica pero con módulo 21, y me dio que cumple con los 2.

Entonces y los n se repiten, el primero es 4, despues el 10.. entonces


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 Asunto: Re: Consultas final 23/12/14
NotaPublicado: 27 Jul 2015, 10:17 
Vago

Registrado: 24 Jul 2015, 19:52
Mensajes: 9
Ahhh buenísimo, muchas gracias!!

Y del 3 alguien tiene alguna idea?


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 Asunto: Re: Consultas final 23/12/14
NotaPublicado: 29 Jul 2015, 04:20 
Vago

Registrado: 29 Jul 2015, 04:14
Mensajes: 1


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