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Найдите второй член геометрической прогрессии если первый член равен 6 , а третий 24.
Ответы 1
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b1=6; b3=b1*q²=6*q²=24⇒q²=24/6=4⇒q1=2 или q2=-2.Проверка: 6*2*2=24 - верно. 6*(-2)*(-2)=*4=24 - верно! Здесь q -искомый знаменатель прогрессии.Ответ: q1=2, q2=-2.
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Автор:
charles80 - 5 лет назад
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