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Waseem Waseem
  • 30-06-2015
  • Mathematics
Answered

Find an explicit function rule for the sequence -4, 1, 6, 11, .... Use the formula a(n) = a (1) + (n+1)d and simplify fully.

Verified Answer :

konrad509
konrad509 konrad509
  • 30-06-2015

\(a_1=-4\\ d=a_{n+1}-a_n\\ d=1-(-4)=1+4=5\\\\ a_n=-4+(n+1)\cdot5\\ a_n=-4+5n+5\\ a_n=5n+1\)

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