Question

In the recursive formula an = an−1 + 5, the value of the previous term is represented by

A) an

B) a5

C) an+5

D) an−1

Answer 1

Step-by-step explanation:

In the recursive formula an = an−1 + 5

$a_n = a_{n-1}+5$

Suppose if a_5 is the nth term then previous term is a_4

To get the previous term we need to subtract 1 from the n

So a_n is the nth term

$a_{n-1}$ is the previous term

Here 5 represents the common difference between two terms

So value of previous term is represented by

$a_{n-1}$

Answer : $a_{n-1}$

Answer 2

Answer:

D) $a_{n-1}$

Step-by-step explanation:

-1 indicates the previous term