Respuesta :

AL2006
I think the definition of your sequence is                      u(n)  =  3n - 2 .
That little set of parentheses makes it SO much
easier to read and understand.

To find  u(any number)  just write the number in place of  'n' .

u(27)  =  3(27) - 2

           =     81  -  2

           =         79   . 

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