Đề thi HK2 môn Toán lớp 10 năm 2018 - 2019 Trường...

A. \( \frac{{3\pi }}{5}.\)

B. \(\frac{\pi }{{10}}.\)

C. \(\frac{{3\pi }}{2}.\)

D. \(\frac{\pi }{4}.\)

A. \(240^0\)

B. \(135^0\)

C. \(72^0\)

D. \(270^0\)

A. \(\sin \alpha  < 0\)

B. \(\cos \alpha  > {\rm{0}}\)

C. \(\tan \alpha  < 0\)

D. \(\cot \alpha  > 0\)

A. \({\sin ^2}\alpha  + {\cos ^2}\alpha  = 1\)

B. \(1 + {\tan ^2}\alpha  = \frac{1}{{{{\cos }^2}\alpha }}\,\left( {\alpha  \ne \frac{\pi }{2} + k\pi ,\,k \in Z} \right)\,\)

C. \(1 + {\cot ^2}\alpha  = \frac{1}{{{{\sin }^2}\alpha }}\;\left( {\alpha  \ne k\pi ,\,k \in Z} \right)\)

D. \(\tan \alpha  + \cot \alpha  = 1\,\left( {\alpha  \ne \frac{{k\pi }}{2},\,k \in Z} \right)\,\)

A. \(\cot \alpha  = 2\)

B. \(\cot \alpha  = \frac{1}{4}\)

C. \(\cot \alpha  = \frac{1}{2}\)

D. \(\cot \alpha  = \sqrt 2 \)

A. \(\sin \alpha  = 1\) và \(\cos \alpha  = 1\)

B. \(\sin \alpha  = \frac{1}{2}\) và \(\cos \alpha  =  - \frac{{\sqrt 3 }}{2}\)

C. \(\sin \alpha  = \frac{1}{2}\) và \({\rm{cos}}\alpha  =  - \frac{1}{2}\)

D. \(\sin \alpha  = \sqrt 3 \) và \(\cos \alpha  = 0\)

A. \(-\frac{{\sqrt 3 }}{2}.\)

B. \(\frac{{\sqrt 3 }}{2}.\)

C. \(\frac{{\sqrt 2 }}{2}.\)

D. \( - \frac{1}{2}.\)

A. \(\left( { - \infty ; - 1} \right] \cup \left[ {7; + \infty } \right)\)

B. \(\left[ { - 1;7} \right]\)

C. \(\left( { - \infty ; - 7} \right] \cup \left[ {1; + \infty } \right)\)

D. \(\left[ { - 7;1} \right]\)

A. x = - 4

B. x = - 7

C. x = - 5

D. x = - 6

A. m < - 1

B. m > - 1

C. \(m <  - \frac{4}{3}\)

D. \(m > \frac{4}{3}\)

A.

B.

C.

D.

A. \(\left[ {3;\, + \infty } \right)\)

B. \(\left( { - \infty ;\,3} \right]\)

C. \(\left( {3;\, + \infty } \right)\)

D. \(\left( { - \infty ;\, - 3} \right)\)

A. \(f\left( x \right) = x - 2\)

B. \(f\left( x \right) = 2 - 4x\)

C. \(f\left( x \right) = 16 - 8x\)

D. \(f\left( x \right) =  - x - 2\)

A. \(\left( { - \infty ;\, - \frac{1}{2}} \right)\)

B. \(\left( { - \infty ;\,\frac{1}{2}} \right)\)

C. \(\left( { - \frac{1}{2};\, + \infty } \right)\)

D. \(\left( {\frac{1}{2};\, + \infty } \right)\)

A. \(m \ne 2\)

B. \(\left\{ \begin{array}{l}m \ne 2\\m \ne  - \frac{1}{2}\end{array} \right.\)

C. m > 2

D. m < 2

A. \(\left[ { - 2; + \infty } \right)\)

B. \(\left[ { - 3; + \infty } \right)\)

C. \(\left[ { - 3; + \infty } \right)\backslash \left\{ 0 \right\}\)

D. \(\left[ { - 2; + \infty } \right)\backslash \left\{ 0 \right\}\)

A. \(\left\{ {2019} \right\}\)

B. \(\left( {2019; + \infty } \right)\)

C. \(\emptyset \)

D. \(\left( { - \infty ;2019} \right)\)

A. 0 < m < 4

B. m < 0 hoặc m > 4

C. m > 2

D. m < 2

A. \({x^2} - 10x + 2\)

B. \({x^2} - 2x - 10\)

C. \({x^2} - 2x + 10\)

D. \( - {x^2} + 2x + 10\)

A. \(\left( { - \infty ;\,\frac{1}{2}} \right] \cup \left[ {2;\, + \infty } \right)\)

B. \(\left[ {2;\, + \infty } \right)\)

C. \(\left( { - \infty ;\,\frac{1}{2}} \right]\)

D. \(\left[ {\frac{1}{2};\,2} \right]\)

A. \(\overrightarrow u  = \left( {2; - 5} \right)\)

B. \(\overrightarrow u  = \left( {5;2} \right)\)

C. \(\overrightarrow u  = \left( { - 1;3} \right)\)

D. \(\overrightarrow u  = \left( { - 3;1} \right)\)

A. \(\left\{ \begin{array}{l}x =  - 3 + 2t\\y = 2 - t\end{array} \right.\)

B. \(\left\{ \begin{array}{l}x = 2 - 3t\\y =  - 1 + 2t\end{array} \right.\)

C. \(\left\{ \begin{array}{l}x =  - 2 - 3t\\y = 1 + 2t\end{array} \right.\)

D. \(\left\{ \begin{array}{l}x =  - 2 - 3t\\y = 1 + 2t\end{array} \right.\)

A. \( - \frac{1}{5}\)

B. \(  \frac{1}{5}\)

C. 0

D. 1

A. \(\overrightarrow n  = \left( {2;\,3} \right)\)

B. \(\overrightarrow n  = \left( {3;\,2} \right)\)

C. \(\overrightarrow n  = \left( {3;\, - 2} \right)\)

D. \(\overrightarrow n  = \left( { - 3;\, - 2} \right)\)

A. \(x - 2y - 4 = 0\)

B. \(x + y + 4 = 0\)

C. \(x - 2y + 5 = 0\)

D. \( - x + 2y - 4 = 0\)

A. I(1;2), R = 1

B. I(1; -2), R = 3

C. I(1;- 2), R = 9

D. I(2; - 4), R = 9

A. I(- 2;3), R = 4

B. I(- 2;3), R = 16

C. I(2; - 3), R = 16

D. I(2; - 3), R = 4

A. \({x^2} + {y^2} + 2x - 20 = 0\)

B. \({x^2} + {y^2} - 4x + 7y - 8 = 0\)

C. \({x^2} + {y^2} - 6x - 2y + 9 = 0\)

D. \({x^2} + {y^2} - 2x + 6y = 0\)

A. \({x^2} + {y^2} + x + y + 4 = 0\)

B. \({x^2} - {y^2} + 4x - 6y - 2 = 0\)

C. \({x^2} + 2{y^2} - 2x + 4y - 1 = 0\)

D. \({x^2} + {y^2} - 4x - 1 = 0\)

A. (C) có tâm I(- 1;- 2)

B. (C) có bán kính R = 5

C. (C) có tâm M(2;2)

D. (C) không đi qua A(1;1)