Đề thi HK2 môn Toán lớp 10 THPT Dương Đình Nghệ -...

A \(S = \left( { - \infty ;2} \right)\)

B \(S = \left( { - \infty ;2} \right]\)

C \(S = \left( {2;\, + \infty } \right)\)

D \(S = \left[ {2; + \infty } \right)\)

A \(\cot \alpha  = \frac{1}{{\sqrt 2 }}\)

B \(\cot \alpha  =  - \frac{1}{{\sqrt 2 }}\)

C \(\cot \alpha  = \frac{1}{2}\)

D \(\cot \alpha  =  - \frac{1}{2}\)                         

A \(S = \left( { - \infty ; - 3} \right] \cup \left[ {2; + \infty } \right)\)

B \(S = \left( { - 3;\,2} \right)\)

C \(S = \left[ { - 3;2} \right]\)

D \(S = \left( { - \infty ; - 3} \right) \cup \left( {2; + \infty } \right)\)

A \(\left( {5; - 1} \right)\)

B \(\left( {1; - 5} \right)\)

C \(\left( {1;5} \right)\)

D \(\left( {5;1} \right)\)  

A \(R = 3\)

B \(R = \frac{3}{5}\)

C \(R = 1\)

D \(R = 15\)  

A \(\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{64}} = 1\)

B \(\frac{{{x^2}}}{{81}} + \frac{{{y^2}}}{{64}} = 1\)

C \(\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{{16}} = 1\)

D \(\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{36}} = 1\)

A 3

B 4

C 5

D 6

A \(S = \left( { - 1;8} \right).\)

B \(S = \left( {1;8} \right).\)

C \(S = \left( { - 8;1} \right).\)

D \(S = \left( { - 8; - 1} \right).\)

A \(S = \left[ {0;\;5} \right].\)

B \(S = \left[ { - 1;\;\frac{1}{2}} \right] \cup \left[ {1;\;5} \right].\)

C \(S = \left[ { - 1;\; - \frac{1}{2}} \right] \cup \left[ {1;\;5} \right].\)

D \(S = \left[ {0;\;\frac{1}{2}} \right] \cup \left[ {1;\;5} \right].\)

A \(\cos \alpha  = \frac{3}{{\sqrt {10} }}\,\,;\,\,\tan \alpha  = \frac{1}{3}\)

B \(\cos \alpha  =  \pm \frac{3}{{\sqrt {10} }}\,\,;\,\,\tan \alpha  =  \pm \frac{1}{3}\)

C \(\cos \alpha  = \frac{2}{{\sqrt {10} }}\,\,;\,\,\tan \alpha  = \frac{1}{2}\)

D \(\cos \alpha  =  \pm \frac{2}{{\sqrt {10} }}\,\,;\,\,\tan \alpha  =  \pm \frac{1}{2}\)

A \(x - 1 = 0\)

B \(x - 3 = 0\)

C \(x - y - 1 = 0\)

D \(x - y - 3 = 0\)

A \(M\left( {1;\,2} \right)\)

B \(M\left( {0;\,1} \right)\)

C \(M\left( { - 1;\,2} \right)\)

D \(M\left( {2;\,1} \right)\)