
Phương trình asinx+bcosx=c
Quiz
•
Mathematics
•
11th Grade
•
Hard
Huan Do
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình a.sinx+b.cosx=c có nghiệm khi nào?
a2+b2>c2
a2+b2≤c2
a2+b2=c2
a2+b2≥c2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình nào sau đây có nghiệm?
sinx=2
2.sinx-3.cosx=1
sinx+3.cosx=6
cosx+3=0
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tìm m để phương trình 3.sinx+4.cosx=m có nghiệm?
m≤-5
-5≤m≤5
m≤5
-1≤m≤1
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Tìm số nghiệm thuộc [-3π/2; -π/2) của phương trình √3.sinx=cos(3π/2-2x)?
4
3
1
2
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Số nghiệm của phương trình sinx-√3cosx=0 trong khoảng (0;π) là?
1
2
0
3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Nghiệm của phương trình √3sin2x-cos2x=2 là?
-π/3+kπ
π/3+kπ
5π/3+k2π
2π/3+k2π
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Số nghiệm của phương trình sin5x+√3cos5x=2sin7x trên khoảng (-π/2; 0) là?
4
3
2
1
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