Question

In the recursive formula f(n) = f(n - 1) + 5, the value of the previous term is represented by ?? A) f(n) B) f(5) C) f(n + 5) D) f(n - 1)

Answer 1

Answer is (D).

Explanation:

`f(n)=f(n-1)+5`

indicates that `n^(th)` term is greater than the `(n-1)^(th)` term by `5`, hence it is an arithmetic sequence with common difference `5`

It is apparent that the previous term is represented bt `f(n-1)`.

Hence, answer is (D).