Предмет: Алгебра, автор: diana9037

Числовое множество а1, а2, а3, ... , аn, ... задано условием: аn=-3-2n. найдите а7
решение пожалуйста, плиииз

Ответы

Автор ответа: Аноним

2

$a_n=-3-2n\\a_7=-3-2\cdot7=-3-14=-17$

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