Question

Which recursive formula can be used to represent the sequence 2,6,10,14,18,...??? Help ASAP!!!!!

Answer 1

The first term = 2

a1 = 2

a_n=a_{n-1}+4

Explanation:

Answer 2

We have the sequence 2, 6, 10, 14, 18, ... Always 4 being added, so we can say:

The first term is 2. The added is 4, so,

a1 = 2

`a_n=a_(n-1)+4`

Prove:

`a_2=a_(2-1)+4 => a_2=a_1+4=>a_2=2+4=6`