Por favor, algu�m poderia me dizer qto vale ( n ) ( n ) ( n ) ( n ) ( )+( ) = 2( ) dividindo todo mundo por ( ) (k-1) (k+1) ( k ) ( k )
onde ( n ) ( ) = n!/k!(n-k)! ( k ) obrigado abra�os _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
