write a recursive formula for an the nth term of the sequence 15,17,19,21 a1= an=
a1 = 15
an = an-1 + 2
To find the recursive formula for the nth term of the sequence 15, 17, 19, 21, we can observe that each term in the sequence is obtained by adding 2 to the previous term.
Therefore, the recursive formula for the nth term of the sequence is:
an = an-1 + 2, where a1 = 15.