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Автор - nikitatapanov2004251

задана формулой n-го члена a n =3n -1 найдите a1, a10, a2020.

Ответ

Проверено экспертом

Автор - 7x8

a_1=3cdot1-1=3-1=2\\a_{10}=3cdot10-1=30-1=29\\a_{2020}=3cdot2020-1=6060-1=6059

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