salomelusale salomelusale
  • 21-05-2018
  • Mathematics
contestada

What is the nth term for -1,0,3,8,15...

Respuesta :

CastleRook
CastleRook CastleRook
  • 31-05-2018
From the sequence given:
-1,0,3,8,15...
the difference between the terms is:
1,3,5,7,..
the above numbers are add numbers, thus the series if obtain by adding add number to the terms. Thus the formula will be:
an=a(n-1)+i
where n is the nth term 
a1=-1
i takes all the off integers, i=1,3,5,...


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