Odpowiedź :
Odpowiedź:
a₁ = 3
q = 2
a₅ = a₁q⁴ = 3 * 2⁴ = 3 * 16 = 48
S₄ = a₁(1 - q⁴)/(1 - q) = 3(1 - 2⁴)/(1 - 2) = 3(1 - 16)/(- 1) = 3 * (- 15)/(- 1) =
= - 45/(- 1) = 45
Odpowiedź:
a₁ = 3
q = 2
a₅ = a₁q⁴ = 3 * 2⁴ = 3 * 16 = 48
S₄ = a₁(1 - q⁴)/(1 - q) = 3(1 - 2⁴)/(1 - 2) = 3(1 - 16)/(- 1) = 3 * (- 15)/(- 1) =
= - 45/(- 1) = 45