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Ajuda


   Olá.
   Por favor, me ajudem nesse exercício:

  (FATEC)-Seja n pertencente IN, tal que

   (1+2+3+...+n)/(n+1)! = 1/240

   Então o valor de log  (2n+4) é:
                       1/2

  a)-4   b)4   c)-2sqrt2   d)2sqrt2    e)1/2


    Muito obrigado.




João Paulo Paterniani da Silva

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