Question

Write an explicit formula for AN, the NTH term of the sequence 2, 4, 6

Answer 1

2n.

Explanation:

This an arithmetic sequence with a1 = 2 and d = 2

an = a1 + d(n - 1)

= 2 + 2(n - 1)

= 2n + 2 - 2

= 2n.