Question

If an=5n+2 find an+1 and an-1

Answer 1

Correct question:-

If an=5n+2 find a(n+1) and a(n-1)

Solution:-

a(n+1) = 5(n+1)+2 = 5n+7

a(n-1) = 5(n-1) +2 = 5n-3