
Арифметическая прогрессия
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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8 questions
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1.
FLASHCARD QUESTION
Front
Как выглядит формула для суммы первых n членов арифметической прогрессии?
Back
2.
FLASHCARD QUESTION
Front
а1=3. d=4. Найти S4-?
Back
36
3.
FLASHCARD QUESTION
Front
a1=-3, a6=21 S6 - ?
Back
54
4.
FLASHCARD QUESTION
Front
Дана арифметическая прогрессия: -4; -2; 0; ... . Найдите сумму первых десяти её членов.
Back
50
5.
FLASHCARD QUESTION
Front
Back
3
6.
FLASHCARD QUESTION
Front
Чему равна сумма первых 100 членов арифметических прогрессии 1, 3, 5, 7, 9, ... ?
Back
10000
7.
FLASHCARD QUESTION
Front
Выписано несколько последовательных членов арифметической прогрессии: …; −9; x; −13; −15; … Найдите член прогрессии, обозначенный буквой x.
Back
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