[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Desafio...




1/1 =     1
2/2 =     1/2+1/2
3/4 =     1/4+1/4+1/4
...

Somando a 1a coluna, 1+1/2+1/4+... = 2.
Somando a 2a coluna, 1/2+1/4+1/8+... = 1.
Somando a 3a coluna, 1/4+1/8+1/16+... = 1/2.

Ou seja, sua soma é 2+1+1/2+1/4+... = 4

Fábio Dias

----- Original Message -----
From: Eduardo Casagrande Stabel <duda@hotnet.net>
To: <obm-l@mat.puc-rio.br>
Sent: Monday, September 13, 1999 6:11 PM
Subject: Desafio...


> Esse eu inventei. Quanto vale:
>
> 1/1 + 2/2 + 3/4 + 4/8 + 5/16 + 6/32 + 7/64 + 8/128 + 9/256 + 10/512 +
11/1024 + ... ?
>
> O termo generico eh  ( n+1 )/( 2^n ).
> duda
>