
Bài kiểm tra số 1
Authored by Khánh Nguyễn bá
Mathematics
11th Grade
Used 5+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Với a là số thực dương tuỳ ý, 3√𝑎2 bằng:
𝑎3 2
𝑎6
𝑎1 6
𝑎2 3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các biểu thức sau, biểu thức nào có nghĩa?
P=0-n
M=2o
Q=log2 (-1)
N=0o
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị của biểu thức 125mũ -1/3. (√5)mũ 2 bằng:1 2
-125
B. ±125
125
đáp án khác
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho a, m, n là số thực dương và 𝑛 ≥ 2. Trong các tính chất sau, tính chất nào sai?
A. 𝑛√𝑎𝑚 = 𝑎𝑚 /𝑛
B. (𝑛√𝑎)𝑚 = 𝑛√𝑎𝑚
C. 𝑛√𝑎𝑚 = 𝑎 n/m
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Khẳng định nào sau đây đúng?
A. 𝑎-𝑛 = 1/an
với 𝑎 ≠ 0
B. 𝑎0 = 0, ∀ 𝑎 ∈ ℝ.
C. 𝑎-𝑛 = 1
𝑎𝑛 , ∀ 𝑎 ∈ ℝ
D. 𝑎0 = 1, ∀ 𝑎 ∈ ℝ.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị của biểu thức 7√7log√7(4) bằng:
28
45
30
11
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nếu 2𝛼 = 9 thì (1/16)a/8
có giá trị bằng:
1/3
3
1/9
D.1 /√.3
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