Respuesta :
3, 1 ,-1, -3, -5
-2 -2 -2 -2
a(n) = a₁ + d(n - 1)
a(n) = 3 - 2(n - 1)
a(n) = 3 - 2(n) + 2(1)
a(n) = 3 - 2n + 2
a(n) = -2n + 3 + 2
a(n) = -2n + 5
a(n) = -2n + 5
a₁₅ = -2(15) + 5
a₁₅ = -30 + 5
a₁₅ = -25
-2 -2 -2 -2
a(n) = a₁ + d(n - 1)
a(n) = 3 - 2(n - 1)
a(n) = 3 - 2(n) + 2(1)
a(n) = 3 - 2n + 2
a(n) = -2n + 3 + 2
a(n) = -2n + 5
a(n) = -2n + 5
a₁₅ = -2(15) + 5
a₁₅ = -30 + 5
a₁₅ = -25