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ÔN TẬP 1

Authored by Yến Thân

Mathematics

1st - 10th Grade

Used 7+ times

ÔN TẬP 1
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6 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Phương trình lượng giác sin2x2sinx=0\sin^2x-2\sin x=0 có nghiệm là:  

 x=k2\pi  

 x=kπx=k\pi  

 π2+kπ\frac{\pi}{2}+k\pi  

 x=π2+k2πx=\frac{\pi}{2}+k2\pi  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

2t2+t+1=02t^2+t+1=0

t+1=0t+1=0

4t2t+3=0-4t^2-t+3=0

4t2t1=04t^2-t-1=0

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

2t2+t+1=02t^2+t+1=0

t+1=0t+1=0

2t2+t+3=0-2t^2+t+3=0

2t2+t+2=0-2t^2+t+2=0

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

x=π2+kπx=\frac{\pi}{2}+k\pi

x=kπx=k\pi

x=k2πx=k2\pi

x=π2+k2πx=\frac{\pi}{2}+k2\pi

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 Nghiệm của PT sinx=1\sin x=1 là:

 x=kπx=k\pi  

 x=k2πx=k2\pi  

 x=π2+kπx=\frac{\pi}{2}+k\pi  

 x=π2+k2πx=\frac{\pi}{2}+k2\pi  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Nghiệm dương nhỏ nhất của phương trình cosx=1\cos x=1  là:


 x=2πx=2\pi  

 x=πx=\pi  

 x=4πx=4\pi  

 x=2πx=-2\pi  

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