Đề thi HK1 môn Toán lớp 12 trường THPT Thăng Long...

A 4

B 0

C 3

D 2

A  Trục Ox là đường tiệm cận ngang của \(\left( C \right)\).                

B Đồ thị\(\left( C \right)\) nằm hoàn toàn phía trên trục hoành.

.

C  Đồ thị\(\left( C \right)\) nhận Oy làm đường tiệm cận ngang.                      

D Đồ thị\(\left( C \right)\) đi qua điểm \(\left( {0;1} \right)\)

A  \(m = 4\).                               

B \(m = 0\).                                

C  \(m =  - 4\).                            

D  \(m = 2\).

A \({S_{xq}} = \frac{1}{3}\pi {r^2}h\).            

B  \({S_{xq}} = \pi {r^2}h\).                 

C \({S_{xq}} = \pi rl\).                           

D  \({S_{xq}} = \pi rh\).

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

B  \(I\left( { - 2;1} \right)\).                               

C  \(I\left( {1;2} \right)\).                                   

D  \(I\left( { - 2; - \frac{3}{2}} \right)\).

A \(\left( {0;\frac{4}{3}} \right]\).                                 

B \(\left[ {\frac{4}{3}; + \infty } \right)\).                                 

C  \(\left( {0;\frac{4}{3}} \right)\)                                 

D  \(\left( {\frac{4}{3}; + \infty } \right)\).

A  \(R{\rm{\backslash }}\left\{ 1 \right\}\).                              

B \(\left\{ 1 \right\}\).                                         

C  \(\forall m \in R\).                             

D  \(\emptyset \).

A Lục giác đều.              

B Bát diện đều.              

C  Tứ diện đều.              

D  Ngũ giác đều.

A \(y' = \frac{{{2^x}\ln 2}}{{{2^x} + 1}}\).                  

B \(y' = \frac{{{e^x}}}{{\left( {{e^x} + 1} \right)\ln 2}}\).                    

C \(y' = \frac{{{2^x}}}{{\left( {{2^x} + 1} \right)\ln 2}}\).                   

D  \(y' = \frac{{{e^x}\ln 2}}{{{e^x} + 1}}\).

A  Hàm số có giá trị lớn nhất bằng 0.                

B Không tồn tại giá trị nhỏ nhất và giá trị lớn nhất của hàm số.                                   

C  Hàm số có giá trị lớn nhất bằng 1 và giá trị nhỏ nhất bằng 0.                      

D Hàm số có giá trị lớn nhất bằng 1.

A 4

B 5

C 2

D 3

A  \(y =  - {x^4} + 8{x^2} + 1\).                                    

B  \(y =  - {x^3} + 3{x^2} + 1\).                                    

C \(y = \frac{1}{4}{x^4} - 2{x^2} + 1\).                                   

D  \(y = {\left| x \right|^3} - 3{x^2} - 1\).

A 2.                                            

B  1.                                           

C \(\frac{{2\sqrt 3 }}{3}\).                                 

D  \(\frac{4}{3}\).

A  \({\log _m}8m = \frac{{3 - a}}{a}\).              

B \({\log _m}8m = \left( {3 + a} \right)a\).       

C \({\log _m}8m = \left( {3 - a} \right)a\).        

D  \({\log _m}8m = \frac{{3 + a}}{a}\).

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

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

C \(D = \left[ { - 1;3} \right]\).                                                                           

D  \(D = \left( { - 1;3} \right)\).

A  2.                                           

B  4.                                           

C \(\frac{1}{4}\).                                    

D  \(\frac{1}{2}\).

A  \({S_{xq}} = 2\pi {R^2}\).                

B  \({S_{xq}} = 4{R^2}\).                                  

C \({S_{xq}} = 4\pi {R^2}\).                 

D  \({S_{xq}} = 2{R^2}\).

A -8

B -2

C 2

D 8

A  \(\frac{{2{a^3}\sqrt 5 }}{3}\).                                   

B \(\frac{{{a^3}\sqrt 5 }}{3}\).                          

C  \(\frac{{{a^3}\sqrt 3 }}{{12}}\).                                

D  \(\frac{{{a^3}}}{4}\).

A  \(y =  - x + 1\).                       

B \(y = 2x - 1\).                          

C \(y = 2x + 2\).             

D  \(y =  - x - 1\).

A  \(y = 2\).                                

B  \(x = 1\).                                

C \(x = 2\).                                 

D  \(y =  - 2\).

A \(\left( { - 4;0} \right)\).                                  

B \(\left( {0; + \infty } \right)\).                         

C  \(\left( { - \infty ;0} \right)\).                         

D  \(\left( { - \infty ; - 4} \right)\).

A 1

B 3

C -3

D -1

A \(R = \frac{{a\sqrt 6 }}{4}\).                          

B \(R = \frac{{a\sqrt 3 }}{4}\).                          

C  \(R = \frac{{a\sqrt 2 }}{4}\).                         

D  \(R = \frac{a}{2}\).

A  2.                                           

B  0.                                           

C \(2\sqrt 2 \).                            

D  \(3\sqrt 2 \).

A  \(\frac{{{a^3}\sqrt 2 }}{3}\).                         

B  \(\frac{{{a^3}\sqrt 3 }}{{12}}\).                                

C \(\frac{{{a^3}\sqrt 3 }}{2}\).                          

D  \(\frac{{{a^3}\sqrt 3 }}{4}\).

A 1

B 2

C 3

D 4

A 1

B 2

C vô số

D 3

A  \(x = 5\).                                

B \(x = 1;\,x = 2\).                      

C  \(x =  - 1\).                             

D  \(x = 0\).

A  \({60^0}\).                             

B \({30^0}\).                                          

C \({45^0}\).                              

D  \({75^0}\).

A \(217.217.000\)VNĐ.             

B  \(417.217.000\)VNĐ.            

C  \(117.217.000\)VNĐ.            

D  \(317.217.000\)VNĐ.

A  \(\frac{{{a^3}\pi }}{3}\).                               

B  \(\frac{{7{a^3}\pi }}{{12}}\).                        

C  \(\frac{{2{a^3}\pi \sqrt 3 }}{3}\).                             

D  \(\frac{{{a^3}\pi \sqrt 3 }}{4}\).

A \(V = 36\).                              

B \(V = 48\).                              

C \(V = 18\).                              

D  \(V = 45\).

A  \(a = \sqrt 3 \).                                   

B  \(a = \sqrt 2 \).                                   

C  \(a = \frac{{\sqrt 2 }}{2}\).                            

D  \(a = 2\).

A \(\frac{{a\sqrt {21} }}{6}\).                            

B \(\frac{{a\sqrt {11} }}{4}\).                            

C \(\frac{{2a}}{3}\).                                           

D  \(\frac{{a\sqrt 7 }}{3}\).

A \(\frac{{{a^2}}}{2}\).                                     

B \(\frac{{3{a^2}}}{4}\).                       

C  \(\frac{{3{a^2}}}{8}\).                                  

D  \(\frac{{5{a^2}}}{8}\).

A  \(\frac{{9{\pi ^3}{a^3}}}{4}\).                                  

B \(9\pi {a^3}\).                         

C  \(3\pi {a^3}\).                        

D  \(\frac{{\pi {a^3}}}{4}\).

A \(m < 0\) hoặc \(m > 4\).                     

B \(1 < m < 4\).                          

C \(m < 0\) hoặc \(m > 2\).         

D  \(m < 1\) hoặc \(m > 4\).        

A  \(4{t^2} - 2t - 3 = 0\).            

B  \({t^2} - 2t - 7 = 0\).              

C  \(8{t^2} - 2t - 7 = 0\).            

D  \({t^2} - t - 7 = 0\).

A \(V = 3{a^3}\).                                   

B \(V = \frac{7}{4}{a^3}\).                               

C  \(V = {a^3}\).                        

D  \(V = \frac{3}{2}{a^3}\).

A  \(m = \sqrt[3]{{16}}\).                                   

B  \(m = \sqrt[5]{{16}}\).                                   

C  \(m =  - \sqrt[3]{{16}}\).                    

D  \(m = 16\).

A  \(y = x + 6;\,y = x + 2\).        

B  \(y =  - x + 2\).                       

C  \(y = x + 6\).                          

D  \(y = x - 2\).

A \(m \le  - 2\).                           

B \(m <  - 2\).                             

C  \(m \ge  - 2\).                         

D  \(m >  - 2\).

A 7

B 3

C 1

D 2

A \(\frac{1}{4}\).                                    

B \(\frac{5}{8}\).                                    

C \(\frac{3}{8}\).                                    

D  \(\frac{3}{2}\).

A  \(S = 135\).                            

B  \(S = 24\).                              

C \(S = 32\).                               

D  \(S = 22\).

A \(P = 3abc\).                           

B \(P = \frac{{a + 2b + 3c}}{2}\).                     

C \(P = 6abc\).                           

D  \(P = a + 2b + 3c\).

A  \(a\).                                       

B  \(a\sqrt 3 \).                           

C \(\frac{{a\sqrt 3 }}{2}\).                                 

D  \(\frac{a}{{\sqrt 3 }}\)

A \(\left( {0; + \infty } \right)\).                         

B  \(\left( {\frac{5}{2}; + \infty } \right)\).                                

C \(\mathbb{R}\).                                             

D  \(\left( {0;\frac{5}{2}} \right)\).