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an=6+(n-1)5
an=6+5n-5
an=5n+1
6, 1, - 4, - 9, - 14, - 19,.....
- 5 - 5 - 5 - 5 - 5
Utilizar: tₓ = t₁ + (x - 1)r
termino general = tₓ
primer termino = t₁ = 6
razón aritmética = r = - 5
numero de términos = x
tₓ = 6 + (x - 1)(- 5)
tₓ = 6 - 5x + 5
tₓ = - 5x + 11
t₁ = - 5(1) + 11 = - 5 + 11 = 6
t₂ = - 5(2) + 11 = - 10 + 11 = 1
t₃ = - 5(3) + 11 = - 15 + 11 = - 4
t₄ = - 5(4) + 11 = - 20 + 11 = - 9
t₄₂ = - 5(42) + 11 = - 210 + 11 = - 199