Đề thi HKI môn Toán lớp 11 - Đề số 2 - Có lời giải...

A R 

B  \(R/\left\{ \frac{\pi }{2}+k\pi ,k\in Z \right\}\)

C \(R\backslash \left\{ {\frac{\pi }{4} + k\frac{\pi }{2},k \in Z} \right\}\)

D  \(R\backslash \left\{ k\pi ,k\in Z \right\}\)

A  Chẵn

B Lẻ                          

C Không chẵn, không lẻ                   

D Vừa chẵn vừa lẻ.

A  M = 5; m = - 5                       

B  M = 7; m = - 7           

C  M = 1; m = - 7 

D M = 7; m =  7.

A  \(x=\pm \frac{5\pi }{6}+k2\pi \)

B \(x=\pm \frac{2\pi }{3}+k2\pi \)

C \(x=\pm \frac{\pi }{6}+k2\pi \)

D  \(x=\pm \frac{\pi }{3}+k2\pi \)

A 4

B 1

C 2

D 3

A \(-2\le m\le 2\)

B  \(m\le 1\) 

C \(-1\le m\le 1\)

D  \(m\le -1\) hoặc \(m\ge 1.\)

A \(x=\frac{\pi }{4}+k\pi \)

B \(x=-\frac{\pi }{4}+k\pi \)

C  \(x=-\frac{\pi }{4}+k2\pi \)

D  \(x=\frac{\pi }{4}+k2\pi \)

A \(x=\dfrac{\pi }{6}\)

B \(x=\dfrac{2\pi }{3}\)

C \(x=\dfrac{\pi }{4}\)

D  \(x=\dfrac{\pi }{3}\)

A \(\cos \left( \frac{\pi }{6}+x \right)=\frac{1}{2}\)

B \(\sin \left( x-\frac{\pi }{6} \right)=\frac{1}{2}\)

C \(\sin \left( \frac{\pi }{3}+x \right)=\frac{1}{2}\)

D \(\cos \left( \frac{\pi }{3}-x \right)=\frac{1}{2}.\)

A  \(x=-\frac{\pi }{2}+k\pi \)

B \(x=-\frac{\pi }{4}+k\pi \)                 

C  \(x=-\frac{\pi }{4}+k2\pi \)               

D  \(x=-\frac{\pi }{8}+k\pi \)

A  48                                          

B  60                                          

C  100                                        

D 125

A \(A_{10}^{3}\)

B \(C_{10}^{3}\)

C \({{P}_{3}}\)

D  Một đáp án khác

A  462                                        

B  -462                           

C 264                                         

D  - 264

A 1                                             

B  -1                                           

C  -10                                         

D  10

A 35

B 45

C 70

D 90

A  \(\frac{1}{6}\)                                              

B  \(\frac{1}{2}\)                                              

C  \(\frac{12}{5}\)                                            

D  \(\frac{2}{3}\)

A  \(\dfrac{n+1}{n}\)                              

B  \(\dfrac{n-1}{n}\) 

C \(\dfrac{n}{n+1}\)                              

D  \(\dfrac{{{n}^{2}}-n}{n+1}\)

A \({{u}_{3}}=-1\)                              

B \({{u}_{3}}=-7\)                                  

C  \({{u}_{4}}=-7\)                              

D \({{u}_{6}}=0.\)

A  \({{u}_{5}}\)                                                

B  \({{u}_{7}}\)                                    

C  \({{u}_{6}}\)                                                

D  Không tồn tại

A  M’(-4; -2) 

B  M’(0; 4) 

C  M’(4; 0)

D M’(4; 2).

A \(2x+y-1=0\)              

B

 \(2x+y+1=0\)

C  \(2x+y-4=0\)

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

A  \(\overrightarrow{u}=\left( -1;1 \right)\)                               

B  \(\overrightarrow{u}=\left( 1;-1 \right)\)                               

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

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

A  \({{V}_{\left( A;2 \right)}}\)                                   

B  \({{V}_{\left( A;-2 \right)}}\)                                  

C  \({{V}_{\left( A;\frac{1}{2} \right)}}\)                              

D  \({{V}_{\left( B;2 \right)}}\) 

A \(\left( { - \frac{3}{2};\frac{5}{2}} \right)\).                                    

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

C  \(\left( { - 6;10} \right)\)                    

D \(\left( {6; - 10} \right)\)

A  \({{\left( x-1 \right)}^{2}}+{{\left( y+2 \right)}^{2}}=36\)

B  \({{\left( x-2 \right)}^{2}}+{{\left( y+4 \right)}^{2}}=9\)

C \({{\left( x-2 \right)}^{2}}+{{\left( y+4 \right)}^{2}}=36\)

D \({{\left( x+2 \right)}^{2}}+{{\left( y-4 \right)}^{2}}=36.\)

A \(MN\parallel AC\)                                   

B \(MN\parallel \left( ABC \right)\)              

C \(MN\parallel BC\)                      

D \(MN\parallel SC\)

A \(a\parallel b\)

B  a chéo b 

C  a cắt b

D a,b không có điểm chung.

A \(x = \frac{\pi }{2} + k2\pi \), \(x = \arcsin \left( { - \frac{1}{4}} \right) + k2\pi \); \(x = \pi  - \arcsin \left( { - \frac{1}{4}} \right) + k2\pi \) \(\left( {k \in \mathbb{Z}} \right)\).

B \(x = \frac{\pi }{2} + k2\pi ,x = \pi  - \arcsin \left( { - \frac{1}{3}} \right) + k2\pi \,\,\left( {k \in Z} \right)\)

C \(x = \frac{\pi }{3} + k2\pi ,x = \pi  - \arcsin \left( { - \frac{1}{4}} \right) + k2\pi \,\,\left( {k \in Z} \right)\)

D \(x = \frac{\pi }{2} + k2\pi ,x = \pi  - \arcsin \left( { - \frac{1}{2}} \right) + k2\pi \,\,\left( {k \in Z} \right)\)

A \(x = \frac{{2\pi }}{3} + \frac{{k2\pi }}{2}\,\,\left( {k \in Z} \right)\).

B \(x = \frac{{1\pi }}{3} + \frac{{k2\pi }}{3}\,\,\left( {k \in Z} \right)\).

C \(x = \frac{{2\pi }}{3} + \frac{{k2\pi }}{6}\,\,\left( {k \in Z} \right)\).

D \(x = \frac{{2\pi }}{3} + \frac{{k2\pi }}{3}\,\,\left( {k \in Z} \right)\).

A 83

B 84

C 86

D 88

A \(\frac{{15}}{{42}}\)

B \(\frac{{25}}{{43}}\)

C \(\frac{{25}}{{42}}\)

D \(\frac{{26}}{{42}}\)