Question

b5=81 b1=1 q=? помогите

Answer 1

b₅ = 81
b₁ = 1
q - ?

b₅ = b₁ ·q⁴            =>          q⁴ = b₅/b₁   =>     q⁴ = 81/1=81

$q= \sqrt[4]{81} = \sqrt[4]{3^4} =3$

Ответ: q=3


·······