

арифм. прогрессия урок
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Mathematics
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9th - 12th Grade
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Easy
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3 Slides • 1 Question
1
an+1= an + d, где d — это разность арифметической прогрессии.
2
Формула n-го члена арифметической прогрессии
an = a1 + d(n-1)
3
Сумма первых n-членов арифметической прогрессии
4
Multiple Choice
В амфитеатре 10 рядов. В первом ряду 25 мест, а в каждом следующем
на 3 места больше, чем в предыдущем. Сколько мест в восьмом ряду амфитеатра?
250
46
284
52
an+1= an + d, где d — это разность арифметической прогрессии.
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