Предмет: Алгебра, автор: flowwer

дана геометрическая прогрессия bn знаменатель которой равен 7_2 а b1 =54 найдите b4 (нужно решение, а не ответ) Если что, ответ должен получиться 2315,25

Universalka: Знаменатель 7,2 ?

Ответы

Автор ответа: Universalka

d = 7/2 = 3,5 b₁ = 54 b₄ = ?
b₄ = b₁ * q³ = 54 * (3,5)³ = 54 * 42,875 = 2315,25

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