Đề thi chuyên đề môn Toán 10 lần III Trường THPT N...

A. \(\left[ {4; - 2} \right)\)

B. \(\left[ { - 4; - 2} \right) \cup \left( {3;7} \right]\)

C. \(\left( {3;7} \right]\)

D. \(\left( { - 4; - 2} \right) \cup \left( {3;7} \right)\)

A. \(\left[ { - 1; + \infty } \right)\backslash \left\{ 2 \right\}\)

B. \(\left[ { - 1; + \infty } \right)\)

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

D. \(\left( { - 1; + \infty } \right)\)

A. \(\frac{{ - 4}}{3}\)

B. \(\frac{{ - 3}}{4}\)

C. \(\frac{4}{3}\)

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

A. \(\sqrt 5 \)

B. \(\sqrt 3 \)

C. \( \pm \sqrt 5 \)

D. \( \pm \sqrt 3 \)

A. \(f\left( x \right) > 0\) khi \(x \in \left( { - 7; - 1} \right) \cup \left( {1;3} \right)\)

B. \(f\left( x \right) > 0\) khi \(x \in \left( { - \infty ; - 7} \right) \cup \left( { - 1;1} \right) \cup \left( {3; + \infty } \right)\)

C. \(f\left( x \right) < m 0\) khi \(x \in \left( { - \infty ; - 7} \right) \cup \left( { - 1;1} \right) \cup \left( {3; + \infty } \right)\)

D. \(f\left( x \right) < 0\) khi \(x \in \left( { - 7;0} \right) \cup \left( {1;3} \right)\)

A. \(\left( { - \infty , - 14} \right] \cup \left[ {18;\left. { + \infty } \right)} \right.\)

B. \(\left( { - \infty , - 14} \right] \cup \left( {18;\left. { + \infty } \right)} \right.\)

C. \(\left( { - \infty , - 14} \right]\)

D. \(\left( { - \infty , - 6} \right) \cup \left( {18;\left. { + \infty } \right)} \right.\)

A. Vô nghiệm                 

B. 1

C. 2

D. 3

A. x + 4y - 5 = 0

B. 4x - y + 14 = 0

C.  - 3x + 2y + 14 = 0

D. x + 4y + 5 = 0

A. 4

B. \(2\sqrt {13} \)

C. \(3\sqrt {6} \)

D. 6

A. \(\overrightarrow {M{\rm{R}}} \)

B. \(\overrightarrow {M{\rm{N}}} \)

C. \(\overrightarrow {P{\rm{R}}} \)

D. \(\overrightarrow {M{\rm{P}}} \)

A. 2S

B. 3S

C. 4S

D. 5S

A. -3

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

C. -2

D. -1