Найдите b5, если b1=270, q=1/3

Question

Найдите b5, если b1=270, q=1/3

Answer 1

B5=b1*q^4
b5=270*1/3 cтепени4=3,1/3

Answer 2

Решение
b₁=270, q=1/3
b₅ = b₁ * q⁴ = 270*(1/3)⁴ = 270*(1/81) = (10*3³)/ 3⁴ = 10 / 3 = 3 (1/3)