Respuesta :

Answer:

aₙ = aₙ₋₁ + 4

Step-by-step explanation:

Finding the common difference (d) :

  • d = f(2) - f(1)
  • d = 7 - 3
  • d = 4

Hence, the recursive formula :

  • aₙ = aₙ₋₁ + 4