
Арифметическая прогрессия
Quiz
•
Mathematics
•
9th Grade
•
Medium
Nurgul Bekmukhanbetkyzy
Used 1+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что такое арифметическая прогрессия?
Геометрическая прогрессия с постоянным отношением.
Арифметическая прогрессия - это последовательность чисел с постоянной разностью между соседними членами.
Числа, которые не имеют никакой связи друг с другом.
Последовательность чисел с переменной разностью.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какова формула n-го члена арифметической прогрессии?
a_n = a_1 - (n + 1) * d
a_n = a_1 * n + d
a_n = a_1 + (n - 1) * d
a_n = d / n + a_1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если первый член прогрессии равен 3, а разность 5, каков второй член?
5
8
15
10
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как найти сумму первых n членов арифметической прогрессии?
S_n = a_1 * n
S_n = n/2 * (a_1 + a_n) или S_n = n/2 * (2a_1 + (n-1)d)
S_n = a_n - a_1
S_n = n^2 * d
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если a1 = 2 и d = 4, каков 10-й член прогрессии?
42
30
38
34
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какое значение имеет разность в арифметической прогрессии?
Количество членов (n) в арифметической прогрессии.
Сумма (s) в арифметической прогрессии.
Разность (d) в арифметической прогрессии.
Первый член (a1) в арифметической прогрессии.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если сумма первых 5 членов равна 30, какова разность, если первый член равен 2?
26
28
32
24
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