Предмет: Алгебра, автор: yroslavmudrij

Дано: (bn) — геометрична прогресія, b1 =6, q=2. Знайдіть S7 суму перших семи її членів.

Ответы

Автор ответа: gazizalclcl

0

Ответ:

S7=6*(2⁷-1)/2-1= 762/1=762

S7=762

Sn=b1(q^n-1)/q-1

ФОРМУЛА!!

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