Đề thi HK1 môn Toán lớp 11 trường THPT Chuyên Phan...

A  \(x = \frac{\pi }{4} + k\pi ,\left( {k \in Z} \right)\).       

B  \(x =  - \frac{\pi }{4} + k\pi ,\left( {k \in Z} \right)\).

C \(x =  \pm \frac{\pi }{4} + k2\pi ,\left( {k \in Z} \right)\).         

D  \(x = \frac{\pi }{4} + k\frac{\pi }{2},\left( {k \in Z} \right)\).

A 2

B 4

C 3

D 1

A  \(SO\), \(O\) là tâm hình bình hành \(ABCD\).              

B  \(SD\)

C  \(SG\), \(G\) là trung điểm \(AB\).                                     

D  \(SF\), \(F\) là trung điểm \(CD\).

A 1;5;17;29;61.                            

B 1;5;14;29;61.                            

C 1;5;13;28;61..                          

D  1;5;13;29;61

A \(216\).                                     

B \(120\).                                     

C \(18\).                                        

D  \(720\).

A  \(n!\).                                       

B \(\frac{{n!}}{{(n - k)!}}\).   

C  \(\frac{{n!}}{{k!(n - k)!}}\).                                                    

D  \(\frac{{n!}}{{k!}}\).

A 24

B 9

C 18

D 10

A  \(\Delta \,\,AOD.\)             

B \(\Delta \,\,CIE.\)                 

C \(\Delta \,\,OBC.\)               

D  \(\Delta \,\,OCI.\)

A \(130\).                                     

B  \(23\).                                       

C  \(253\).                                    

D  \(506\).

A  \( - 9C_9^7\).                         

B  \( - C_9^7\).                           

C \(9C_9^7\).                             

D \(C_9^7\).

A     36.     

B 2250.                                          

C 5040.                                          

D  181440

A \(x \ne \pi  + k3\pi ,\left( {k \in Z} \right)\).                   

B \(x \ne  - \frac{\pi }{{12}} + k3\pi ,\left( {k \in Z} \right)\).

C  \(x \ne  - \frac{\pi }{2} + k6\pi ,\left( {k \in Z} \right)\).          

D  \(x \ne \pi  + k6\pi ,\left( {k \in Z} \right)\).

A 1

B 2

C 3

D 4

A  \({a^2} + {b^2} > {c^2}\).  

B  \({a^2} + {b^2} \ge {c^2}\).                                                    

C \({a^2} + {b^2} \le {c^2}\).

D  \({a^2} + {b^2} < {c^2}\).

A 8

B 6

C 7

D 9

A \(\frac{5}{{12}}.\)                  

B \(\frac{2}{{15}}\).                  

C \(\frac{7}{{45}}\).                  

D  \(\frac{8}{{15}}\).

A \(x = \dfrac{\pi }{6} + k2\pi ,\left( {k \in Z} \right)\).     

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

C  \(x = \dfrac{\pi }{6} + k\pi ,\left( {k \in Z} \right)\).       

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

A A, J, M thẳng hàng.                                                                    

B

J là trung điểm AM.

C  \(AM = \left( {ACD} \right) \cap \left( {ABG} \right)\).           

D  \(DJ = \left( {ACD} \right) \cap \left( {BDJ} \right).\)

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

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

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

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

A \(SN.\)                                       

B  \(SA.\)                                      

C \(MN.\)                                           

D  \(SM.\)

A a)

\(x =  \pm \frac{\pi }{3} + k2\pi \)

b)

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

B a)

\(x =  \pm \frac{\pi }{4} + k2\pi \)

b)

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

C a)

\(x =  \pm \frac{\pi }{3} + k2\pi \)

b)

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

D a)

\(x =  \pm \frac{\pi }{3} - k2\pi \)

b)

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