Đáp án mới nhất

0

a/b + c+1 = b/c+a+1=c/a+b-2=a+b+c. tìm a,b,c
2

so diem bieu dien nghiem tren duong tron luong giac cua pt |sin x+cos x| + 4sin 2x=1
1

2sin2x+23sinxcosx+1=3(cosx+3sinx)
2

1/ tan2xtanx.tan3x=22/ 8sinx=3cosx+1sinx
2

1/ tan2xtanx.tan3x=22/ 8sinx=3cosx+1sinx
1

1) sin2x+sinx+cos3x=02) cos3xcos2xcosx=sin2xsinx1
0

1) sin2x+sinx+cos3x=02) cos3xcos2xcosx=sin2xsinx1
1

1) 2sinx+2cosx+sin2x2cos2x=02) cos2xcosxsin23x2=0
1

1) 2sinx+2cosx+sin2x2cos2x=02) cos2xcosxsin23x2=0
1

Giải phương trình sau bằng lượng giác :1+1x2[(1+x)3(1x)322+22x2
0

a) y=2sinx+cosxsinx+cosx+4 b) P=3cos3x2sin2x6cosx+8sinx2cosx
2

cotx+sinx×(1+tanx×tanx2)=4
1

a) mcosx – (m + 1)sinx = m b) (m^2 + 2)sin2x + 4msinx.cosx = m^2 + 3
2

a) mcosx – (m + 1)sinx = m b) (m^2 + 2)sin2x + 4msinx.cosx = m^2 + 3
2

giải phương trìnha)\frac{1}{\sin x}+\frac{1}{\sin \left ( x-\frac{3\pi }{2} \right )}=4\sin \left ( \frac{7\pi }{4}-x \right )b)2\sin x\times\left ( 1+\cos 2x \right )+\sin 2x=1+2\cos x
2

giải phương trìnha)\frac{1}{\sin x}+\frac{1}{\sin \left ( x-\frac{3\pi }{2} \right )}=4\sin \left ( \frac{7\pi }{4}-x \right )b)2\sin x\times\left ( 1+\cos 2x \right )+\sin 2x=1+2\cos x
1

Giải các phương trình sau:a)\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}b)\cos 3x+\cos 2x-\cos x-1=0c)\cos^{2}3x\times\cos 2x-\cos^{2}x=0d)2\sin ^{2}2x+\sin 7x-1=\sin x
2

Giải các phương trình sau:a)\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}b)\cos 3x+\cos 2x-\cos x-1=0c)\cos^{2}3x\times\cos 2x-\cos^{2}x=0d)2\sin ^{2}2x+\sin 7x-1=\sin x
2

Giải các phương trình sau:a)\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}b)\cos 3x+\cos 2x-\cos x-1=0c)\cos^{2}3x\times\cos 2x-\cos^{2}x=0d)2\sin ^{2}2x+\sin 7x-1=\sin x
2

Giải các phương trình sau:a)\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}b)\cos 3x+\cos 2x-\cos x-1=0c)\cos^{2}3x\times\cos 2x-\cos^{2}x=0d)2\sin ^{2}2x+\sin 7x-1=\sin x
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