Question

Write a recursive formula for the arithmetic sequence {an}={2,7/2,5,13/2,...}.

a) a1=2; an=an-1+3/2
b) a1=2; an=an-1+5/2
c) a1=2; an=5/2an+3/2
d) a1=2; an=3/2an+5/2

Answer 1

Answer:

a)

Step-by-step explanation:

in a arithmetic sequence you need to find the difference between the terms in order to get the formula, in this case from 2 you're adding 3/2 to get the next term, therefore the answer is a) an=an-1+3/2