
Cấp số công - cấp số nhân
Authored by Thanh Ngo Minh
Mathematics
11th Grade
Used 8+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Cho cấp số cộng (un) có u3 = 2 và u4 = 6. Công sai của cấp số cộng đã cho bằng:
-4
4
-2
2
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Dãy số nào sau đây là cấp số cộng?
2;5;8;11;14
1;2;4;8;16
1;3;9;27;81
1;2;3;5;6
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Cho cấp số cộng (un) với u1 = 2 và công sai d = 1. Khi đó, u10 bằng
10
20
11
12
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các dãy số được cho dưới đây, dãy số nào là cấp số cộng
un = 7 - 3n
un = 7 - 3n
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
40
38
36
20
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
23
21
22
20
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