
K11. Đấu trường Toán học

Quiz
•
Mathematics
•
11th Grade
•
Hard
Đỗ Hằng
Used 5+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
Cho cấp số cộng (Un) có U1 = 3, d = 2. Số hạng thứ năm của dãy số là:
5
18
11
13
2.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
Cho cấp số cộng (Un) có U5 = 7, U3 = 3. Công sai của dãy số là:
4
-2
5
2
3.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
sin300 bằng
0,7
0,3
0,5
1
4.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
tanx . cotx =
-1
0
1
2
5.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
Trong các hàm số sau đâu là hàm số chẵn?
y = sinx
y = cosx
y = tanx
y = cotx
6.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
Cho ba số 4; x; 9 lập thành một cấp số nhân. Giá trị của x là:
6
-6
6,5
-6; 6
7.
MULTIPLE CHOICE QUESTION
20 sec • 5 pts
Cho cấp số nhân (Un) có Un+1 = 18; Un = 2. Công bội là:
6
16
9
4
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