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koreyakoreya200
@koreyakoreya200
July 2022
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Выписаны первые несколько членов геометрической прогрессии: -6; -21; -73,5; ... . Найдите её четвёртый член.
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olychka4002
Verified answer
Bn=b1*q^n-1
q=b2/b1=-21/-6=7/2
b4=b1*q^3
b4=-6*7/2^3=-6*343/8=-2058/8=-257,25
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koreyakoreya200
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Verified answer
Bn=b1*q^n-1q=b2/b1=-21/-6=7/2
b4=b1*q^3
b4=-6*7/2^3=-6*343/8=-2058/8=-257,25