
ÔN TẬP CHƯƠNG 1
Authored by mai tran
Mathematics
10th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cung có số đo 250° thì có số đo theo đơn vị là radian là
25π/12
25π/18
25π/9
35π/18
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cho sinα=1/3 với π/2<α<π. Tính cosα.
cosα=2√2/3
cosα=−2√2/3
cosα=8/9
cosα=−8/9
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Rút gọn biểu thức M=cos(a+b)cos(a−b)−sin(a+b)sin(a−b), ta được
M=sin4α
M=1−2cos²α
M=1−2sin²α
M=cos4α
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Hàm số y=cos2x có chu kỳ là
T=2π
T=π/2
T=π
T=4π
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các hàm số sau, hàm số nào là hàm số chẵn?
y=|sinx|
y=x²sinx
y=x/cosx
y=x+sinx
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tìm giá trị lớn nhất M và giá trị nhỏ nhất m của hàm số y=3sinx−2.
M=1,m=−5
M=3,m=1
M=2,m=−2
M=0,m=−2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Phương trình lượng giác: cos3x=cos12 có nghiệm là:
x = ±π/15 + k2π
x = ±π/45 + k2π/3
x = −π/45 + k2π/3
x = π/45 + k2π/3
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