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Re: [obm-l] Fatoriais



A primeira coisa a fazer neste problema � determinar que n�meros tem fatorial igual a 1. Naturalmente, estes n�meros s�o 0 e 1.
 
Se 5x-7 = 0, ent�o x = 7/5.
 
Se 5x-7 = 1, ent�o x = 8/5
 
Assim, as r��zes da equa��o s�o x1 = 7/5 e x2 = 8/5.
 
x1 + x2 = 7/5 + 8/5 = 15/5 = 3.
----- Original Message -----
Sent: Friday, January 03, 2003 7:47 PM
Subject: [obm-l] Fatoriais

Porque a soma ra�zes da equa��o  (5x-7)! = 1  � igual a 3 ?