College

The pattern of numbers below is an arithmetic sequence:
[tex]$14, 24, 34, 44, 54, \ldots$[/tex]

Which statement describes the recursive function used to generate the sequence?

A. The common difference is 1, so the function is [tex]$f(n+1) = f(n) + 1$[/tex] where [tex][tex]$f(1) = 14$[/tex][/tex].

B. The common difference is 4, so the function is [tex]$f(n+1) = f(n) + 4$[/tex] where [tex]$f(1) = 10$[/tex].

C. The common difference is 10, so the function is [tex]$f(n+1) = f(n) + 10$[/tex] where [tex][tex]$f(1) = 14$[/tex][/tex].

D. The common difference is 14, so the function is [tex]$f(n+1) = f(n) + 14$[/tex] where [tex]$f(1) = 10$[/tex].

Answer :

To determine the recursive function used to generate the given arithmetic sequence, we need to identify two key elements: the common difference and the first term of the sequence.

The sequence provided is: 14, 24, 34, 44, 54, ...

1. Identify the Common Difference:
- The common difference is the value added to each term to obtain the subsequent term in an arithmetic sequence.
- Let's look at the first few terms:
- [tex]\(24 - 14 = 10\)[/tex]
- [tex]\(34 - 24 = 10\)[/tex]
- [tex]\(44 - 34 = 10\)[/tex]
- [tex]\(54 - 44 = 10\)[/tex]
- Hence, the common difference is 10.

2. Identify the First Term:
- The first term of the sequence is the first number given in the sequence.
- Here, the first term is 14.

3. Write the Recursive Function:
- A recursive function for an arithmetic sequence with common difference [tex]\(d\)[/tex] and first term [tex]\(f(1)\)[/tex] is typically expressed as:
[tex]\[
f(n+1) = f(n) + d
\][/tex]
- For this sequence:
- The common difference [tex]\(d\)[/tex] is 10.
- The first term [tex]\(f(1)\)[/tex] is 14.
- Therefore, the recursive function is:
[tex]\[
f(n+1) = f(n) + 10 \quad \text{where} \quad f(1) = 14
\][/tex]

Based on these observations, the correct statement describing the recursive function is:

"The common difference is 10, so the function is [tex]\(f(n+1) = f(n) + 10\)[/tex] where [tex]\(f(1) = 14\)[/tex]."