Odpowiedź:
Mamy:
a_1 = 3, a_1*q, a_1*q^2, a_1*q^3,a_1*q^4 = 16/2187
3*q^4 = 16/2187 / : 3
q^4 = 16/6561
q = 2/9
=======
Odp.:
a_2 = 3*(2/9) = 2/3
a_3 = (2/3)*(2/9) = 4/27
a_4 = (4/27)*(2/9) = 8/243
========================
Szczegółowe wyjaśnienie:
