Question

What is the recursive formula for this sequence? 14, 18, 22, 26, 30, .

Answer 1

Answer:

We conclude that the recursive formula would be:

aₙ = aₙ₋₁ + 4

Step-by-step explanation:

Given the sequence

14, 18, 22, 26, 30, .

Determining the common difference between the adjacent terms

18-4 = 22,  22-18 = 4,   26-22 = 4,   30-26 = 4

As the common difference is same.

i.e. d = 4

Thus, this sequence represents the Arithmetic sequence.

also

a₁=14

As the common difference d=4, meaning the next term (aₙ₋₁) can be obtained by adding 4 to the previous term.

Thus, the recursive formula would be:

aₙ = aₙ₋₁ + 4

VERIFICATION

Given

a₁=14

Put n = 2 to get the next term i.e. (a₂).

Using the recursive formula

aₙ = aₙ₋₁ + 4

a₂ = a₂₋₁ + 4

    = a₁ + 4

    = 14 + 4

     = 18

Thus, a₂ = 18 can be obtained by adding 4 to the previous term.

Therefore, we conclude that the recursive formula would be:

aₙ = aₙ₋₁ + 4