Предмет: Алгебра, автор: Аноним

2)пусть аn есть арифмитеческая прогрессия.Если а1=-10 и а3=-4, с помощью характеристического свойства найдите а2. Определите значение девятого члена прогрессии 3)в арифмитеческой прогрессии(аn) известно, что d=2,a1=5. Найти s13 (РЕШИТЕ ХОТЯБЫ 1 ЗАДАНИЕ УЖЕ ЧАС ЗАДАЮ ВОПРОСЫ ВСЕ ПРОХОДЯТ МИМО)

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Автор ответа: zveryakovanata

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