Determine if the sequence is arithmetic. If it is, find the common difference, the explicit formula, and the recursive formula.
-3. 7. 17. 27. ...

Respuesta :

Answer:

see explanation

Step-by-step explanation:

Note there is a common difference d between consecutive terms, that is

d = 7 - (- 3) = 17 - 7 = 27 - 17 = 10

This indicates the sequence is arithmetic with n th term

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 3 and d = 10, thus

[tex]a_{n}[/tex] = - 3 + 10(n - 1) = - 3 + 10n - 10 = 10n - 13 ← explicit formula

The recursive formula allows a term to be found by adding d to the previous term, thus

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] + 10 ← recursive formula

Otras preguntas