Найти третий член последовательности an = n(n + 1) (n = 1,2,3,4, …)

Тест по последовательностям

Quiz
•
Mathematics
•
9th Grade
•
Hard
Дилара Ахметченова
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4
13
15
12
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Выберите член последовательности (аn ), который следует за an+5
a6
a5
an+6
6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Выберите член последовательности (an ), который предшествует члену a3n
a2n+1
а3n
a3n -1
-1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
По заданной формуле n-го члена последовательности вычислите первые 3 члена последовательности an = n (n-1 )- 2
-2, 0, 4
(5, 0,-2)
(-1, 0,7)
(1, 2,3)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найти пятый член последовательности an=n(2-5n)+5
2
-2
15
-110
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какой формулой задается последовательность чисел:2;5;8;....
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Подберите формулу n-го члена последовательности 3,5,7,9,11, …
5n
n + 3
2n + 1
2n + 5
n + 2
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