Đề kiểm tra HK2 môn Toán 10 Trường THPT Lê Hồng Phong năm 2018- 2019

A. \(\sin \alpha  > 0;\,\,\cos \alpha  > 0.\)

B. \(\sin \alpha  < 0;\,\,\cos \alpha  < 0.\)

C. \(\sin \alpha  > 0;\,\,\cos \alpha  < 0.\)

D. \(\sin \alpha  < 0;\,\,\cos \alpha  > 0.\)

A. \(m_a^2 = \frac{{{b^2} + {c^2}}}{2} + \frac{{{a^2}}}{4}\)

B. \(m_a^2 = \frac{{{b^2} + {c^2}}}{2} - \frac{{{a^2}}}{4}\)

C. \(m_a^2 = \frac{{{a^2} + {c^2}}}{2} - \frac{{{b^2}}}{4}\)

D. \(m_a^2 = \frac{{{b^2} + {c^2}}}{4} - \frac{{{a^2}}}{2}\)

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

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

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

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

A. 10

B. 25

C. 5

D. \(\sqrt {10} \)

A. \(\frac{{{x^{\rm{2}}}}}{{{\rm{25}}}}{\rm{ + }}\frac{{{y^{\rm{2}}}}}{{\rm{9}}} = 1\)

B. \(\frac{{{x^{\rm{2}}}}}{{{\rm{25}}}} - \frac{{{y^{\rm{2}}}}}{{{\rm{16}}}} = 1\)

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

D. \(\frac{{{x^{\rm{2}}}}}{{{\rm{100}}}}{\rm{ + }}\frac{{{y^{\rm{2}}}}}{{{\rm{81}}}} = 1\)

A. \(S = \left( { - 1;0} \right)\)

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

C. \(S = \left( {1; + \infty } \right)\)

D. \(S = \left( {0;1} \right)\)

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

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

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

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

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

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

C. \(f\left( x \right) = 8 - 4x\)

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

A. \(A = \sin 4x.\)

B. \(A = \sin x.\)

C. \(A = \sin 2x.\)

D. \(A = \cos 2x.\)

A. \(bx - b \le 0 \Leftrightarrow x \le 1.\)

B. \(bx - b \le 0 \Leftrightarrow x \ge 1.\)

C. \(bx - b \le 0 \Leftrightarrow x \le - 1.\)

D. \(bx - b \le 0 \Leftrightarrow x \ge - 1.\)

A. 6

B. 7

C. 4

D. 3

A. \(x + y-3 > 0\)

B. \(-x-y < 0\)

C. \(x + 3y + 1 < 0\)

D. \(-x-3y-1 < 0\)

A. \(l = \frac{\pi }{{40}}\)

B. \(l = \frac{{40}}{\pi }\)

C. \(l = 5\pi \)

D. \(l = 10\pi \)

A. \(\left\{ \begin{array}{l} x + 3y - 6 < 0\\ 2x + y + 4 > 0 \end{array} \right.\)

B. \(\left\{ \begin{array}{l} x + 3y \ge 0\\ 2x + y - 4 < 0 \end{array} \right.\)

C. \(\left\{ \begin{array}{l} x + 3y < 0\\ 2x + y + 4 > 0 \end{array} \right.\)

D. \(\left\{ \begin{array}{l} x + 3y - 6 < 0\\ 2x + y + 4 \ge 0 \end{array} \right.\)

A. \(300^\circ \)

B. \(5^\circ \)

C. \(600^\circ \)

D. \(270^\circ \)

A. 2,5

B. 2,6

C. 9,8

D. 5,2

A. \(\dfrac{15}{2}\)

B. \(\dfrac{49}{24}\)

C. 6

D. \(\dfrac{7}{3}\)

A. \(\left[ {2;4} \right]\backslash \left\{ 3 \right\}.\)

B. \(\left[ {1;5} \right].\)

C. \(\left( {2;5} \right]\backslash \left\{ 3 \right\}.\)

D. \(\left( {1;5} \right].\)

A. \(- \dfrac{7}{{15}}.\)

B. \( \dfrac{7}{{15}}.\)

C. \(- \dfrac{8}{{21}}.\)

D. \(\dfrac{8}{{21}}.\)

A. \(\left( {0;1} \right).\)

B. \(\left( {8;9} \right).\)

C. \(\left( {5;6} \right).\)

D. \(\left( {6;8} \right).\)

A. \(T=-1.\)

B. \(T=1.\)

C. \(T=-2.\)

D. \(T=2.\)

A. \(b-3a=0\)

B. \(b-2a=0.\)

C. \(b+a=5.\)

D. \(b+a=3.\)

A. \(S = \left( { - \infty ; - 3} \right) \cup \left( {1;3} \right).\)

B. \(S = \left( { - 1;1} \right) \cup \left( {3; + \infty } \right).\)

C. \(S = \left( { - 3;1} \right) \cup \left( {3; + \infty } \right).\)

D. \(S = \left( { - \infty ; - 1} \right) \cup \left( {1;3} \right).\)