Предмет: Алгебра, автор: KennetPetrovich

На ИзОбРаЖеНиИ............

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Автор ответа: Аноним

0

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вот

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Автор ответа: Аноним

1

у=lg((x-3)/(5x+2))

(x-3)/(5x+2))>0 Решим неравенство методом интервалов. Разобьем числовую прямую на три интервала корнями левой части т.е. числами -0.4 и3 и определим знаки на каждом из них

____-0.4________3________

+ - +

Получим ответ х∈(-∞;-0.4)∪(3;+∞)

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