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Ververa1000
@Ververa1000
August 2022
1
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ВЫПИСАНЫ ПЕРВЫЕ ТРИ ЧЛЕНА АРИФМЕТИЧЕСКОЙ ПРОГРЕССИИ:
-17;-14;-11
Найдите 81-й член этой прогрессии.
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ПрофиЗнания
A1=-17
a2=-14
d=-14+17=3
an=a1+(n-1)d
a81=-17+80*3=-17+240=223
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Answers & Comments
a2=-14
d=-14+17=3
an=a1+(n-1)d
a81=-17+80*3=-17+240=223