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UBA - CienciaS :: Ver Tema - [A resolver] Final 16/12/05 - Ejercicio 2, combinatoria
UBA - CienciaS
http://ubacs.com.ar/ubacs/

[A resolver] Final 16/12/05 - Ejercicio 2, combinatoria
http://ubacs.com.ar/ubacs/viewtopic.php?f=39&t=812
Página 1 de 1

Autor:  axelbrz [ 28 Dic 2008, 16:50 ]
Asunto:  [A resolver] Final 16/12/05 - Ejercicio 2, combinatoria

El ejercicio 2 dice así:

2. Sea .
Determinar cuántas funciones biyectivas satisfacen que para todo par y para todo

Bueno, es claro que:
Pero eso de me mató!!

Alguna ayuda??

Gracias!!

Autor:  axelbrz [ 28 Dic 2008, 18:38 ]
Asunto:  Re: [A resolver] Final 16/12/05 - Ejercicio 2, combinatoria

Bueno, recién hablando con un amigo me contó lo que se le ocurrio, y la verdad que está buenísimo!! jaja, acá va:


Bueno, no se si se me hubiese ocurrido esta forma de resolverlo, pero para la próxima, a contar cuántas ubicaciones nos quedan habiendo puesto los elementos anteriores!! jaja

Saludos!

Autor:  LeoT16 [ 03 Sep 2010, 11:55 ]
Asunto:  Re: [A resolver] Final 16/12/05 - Ejercicio 2, combinatoria

Me parece que está mal la resolución.

Cuando suponés que tenés 50-9 "lugares" para asignarle al 2 me parece que estás equivocado. En realidad tenés 50-1 lugares (o sea, podés asignarle cualquiera menos el 2).

Saludos

Autor:  Mike [ 08 Sep 2010, 14:47 ]
Asunto:  Re: [A resolver] Final 16/12/05 - Ejercicio 2, combinatoria

Creo que tiene razón Leo.
Hay una confusión al decir "le asigno al 2". No se si tomás al 2 como del dominio o de la imagen...
El del dominio ya tiene su ubicacion que es 2+1=3.

Autor:  juli2222 [ 10 Nov 2010, 00:32 ]
Asunto:  Re: [A resolver] Final 16/12/05 - Ejercicio 2, combinatoria

Me parece que el ejercicio está bien porque el 2 es el 2 de la imagen. Es como decir "para cuántos i f(i) puede ser = 2". Si seguís el ejercicio con esa lógica el resultado parece estar bien así.

Autor:  vicky [ 19 Dic 2010, 12:18 ]
Asunto:  Re: [A resolver] Final 16/12/05 - Ejercicio 2, combinatoria


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