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решите пример
сравните выражение
а+а2+а3 и (а-1/2)+(а2-1/3)+(а3-1/4)
Ответы 1
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Раскрываем скобки в правой части:(а-1/2)+(а2-1/3)+(а3-1/4) = a - 1/2 + a2 - 1/3 + a3 - 1/4 = (a + a2 + a3) - (1/2 + 1/3 + 1/4) = (a + a2 + a3) - 13/12Видно, что правая часть меньше левой, так как она разности левой и числа 13/12.
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Автор:
leia - 5 лет назад
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