Question

Write down in terms of n 4 ,1 -2, -5 ,-8

Answer 1

aₙ= 3n+1

Explanation:

4 ,1 -2, -5 ,-8

AP with a₁=4 and d= -3

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aₙ= 4+3*(n-1)= 4+3n-3= 3n+1

aₙ= 3n+1