Предмет: Геометрия, автор: Викуша28

найдите 1й член геометрической прогрессии (bn) если b7=0,005 , q=1/2

Ответы

Автор ответа: gromoff97

b(n)= b1* q^(n-1)

b7= b1 * q^(7-1)

b1= b7 / q^6= 0,005/0,5^6=0,005/0,25^3=0,32

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