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Dashamvg
@Dashamvg
August 2022
1
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в арифметической прогрессии найти а15,если а1=-3,d=2
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afanasevanatal
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По формуле: an=a1+d(n-1)
a15 = -3 + 2 (15-1) = -3 + 28 = 25
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Verified answer
По формуле: an=a1+d(n-1)a15 = -3 + 2 (15-1) = -3 + 28 = 25