Odpowiedź :
Odpowiedź:
a₂ = a₁q = 2
a₄ = a₁q³ = 128/27
a₄/a₂ = a₁q³/a₁q = q²
q² = a₄/a₂ = 128/27 : 2 = 128/54 = 64/27
q = √(64/27) = 8/√(9 * 3) = 8/3√3 =8√3/(3 * 3) = 8√3/9
Odpowiedź:
a₂ = a₁q = 2
a₄ = a₁q³ = 128/27
a₄/a₂ = a₁q³/a₁q = q²
q² = a₄/a₂ = 128/27 : 2 = 128/54 = 64/27
q = √(64/27) = 8/√(9 * 3) = 8/3√3 =8√3/(3 * 3) = 8√3/9