
Cấp số
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Medium
Thanh Dung
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Trong dãy số sau, số nào không phải cấp số cộng ?
1; 1; 1; 1; 1
-8; -6; -4; -2; 0
3; 1; -1; -2; -4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
d= 3
d= -2
d= 1
d=2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Trong các dãy số có công thức tổng quát sau, dãy số nào là cấp số cộng ?
un= 2021n
un= 2n + 2021
un= n2 - 2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho cấp số cộng ( un) với u1= 8 và công sai d=3. Giá triij của u2 bằng
24
5
11
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho cấp số cộng ( un ) với u1= 2 và u2= 6. Công sai của cấp số cộng đã cho bằng
4
-4
8
3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dãy số nào sau đây không phải là cấp số nhân ?
1; -3; 9; -27; 54
1; 2; 4; 8; 16
1; -1; 1; -1; 1
1, -2, 4, -8; 16
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A
B
C
D
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