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A  $\dfrac{{{x^3}}}{3} + 3x + C$.                                

B ${x^3} + 3x + C$.           

C \(\dfrac{{{x^3}}}{2} + 3x + C\).                                         

D ${x^2} + 3 + C$.

A $\dfrac{1}{2}\ln \dfrac{7}{5}$.                                

B $\dfrac{1}{2}\ln \dfrac{5}{7}$.                                      

C $\dfrac{{ - 4}}{{35}}$           

D $\dfrac{1}{2}\log \dfrac{7}{5}$.

A $\left( {5;2} \right)$.            

B $\left( {2;5} \right)$.             

C $\left( { - 2;5} \right)$.          

D $\left( {2; - 5} \right)$.

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

B $\left\{ \begin{array}{l}x = 2 + 2t\\y =  - 3\\z = 1 - t\end{array} \right.$.              

C $\left\{ \begin{array}{l}x =  - 2 + 2t\\y =  - 3t\\z = 1 + t\end{array} \right.$.         

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

A $\left( {3;3;3} \right)$.        

B $\left( {2;5;9} \right)$.          

C $\left( {5;7;9} \right)$.          

D $\left( {4;10;18} \right)$.

A  $\overrightarrow n  = \left( {1;1; - 2} \right)$.           

B $\overrightarrow n  = \left( {1;0; - 2} \right)$. 

C $\overrightarrow n  = \left( {1; - 2;4} \right)$.           

D $\overrightarrow n  = \left( {1; - 1;2} \right)$.

A   Hàm số có giá trị cực tiểu bằng -1 và 1.                         

B Hàm số đạt cực tiểu tại $x = 0$.                                     

C   Hàm số đạt cực đại tại $x = 0$.                                     

D Hàm số có đúng hai điểm cực trị

A  Hàm số nghịch biến trên khoảng $\left( { - 1;1} \right)$.

B   Hàm số đồng biến trên khoảng $\left( { - 1;1} \right)$.                                          

C   Hàm số đồng biến trên khoảng $\left( {1; + \infty } \right)$. 

D   Hàm số đồng biến trên các khoảng $\left( { - \infty ; - 1} \right)$ và $\left( {1; + \infty } \right)$

A $x =  - 3$.                             

B $x = 1$.                                 

C $x = 3$.                                 

D $x = 8$

A $y = \dfrac{{ - 2x - 1}}{{x + 2}}$.                                 

B $y = 2{x^3} - x + 1$.             

C $y = \dfrac{{{x^2} - x + 1}}{{x - 2}}$.                           

D $y =  - {x^4} + 2{x^2} - 2$.

A $\dfrac{3}{2}$.                    

B $6$.                                        

C $5$.                                        

D $3$.

A $y = {\left( {\dfrac{\pi }{3}} \right)^x}$.                      

B $y = {\left( {\dfrac{1}{{\sqrt 3 }}} \right)^x}$.              

C $y = {\left( {\dfrac{2}{e}} \right)^x}$.                           

D $y = {\left( {\dfrac{1}{{\sqrt 2 }}} \right)^x}$.

A  $12{a^3}$.                           

B $4{a^3}$.                              

C $4{a^2}$.                              

D $12{a^2}$.

A   $\dfrac{{\sqrt 3 {a^3}}}{3}$.                                        

B $\dfrac{{2{a^3}}}{3}$.         

C $\sqrt 3 {a^3}$.                     

D $\dfrac{{2\sqrt 6 {a^3}}}{3}$.

A   $6{x^5} - 20{x^4} + 4{x^3}$.                                       

B $6{x^5} - 20{x^4} - 16{x^3}$.                                       

C $6{x^5} + 16{x^3}$.             

D $6{x^5} - 20{x^4} + 16{x^3}$.

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

B $\left( {0;2} \right)$.             

C $\left( {2;0} \right)$.             

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

A $S = \dfrac{{397}}{4}$.  

B $S = \dfrac{{937}}{{12}}$.                                       

C $S = \dfrac{{343}}{{12}}$.                                       

D $S = \dfrac{{793}}{4}$.

A ${\left( {x + 1} \right)^2} + {y^2} + {\left( {z - 1} \right)^2} = 8$.                   

B ${\left( {x + 1} \right)^2} + {y^2} + {\left( {z - 1} \right)^2} = 2$.                               

C    ${\left( {x - 1} \right)^2} + {y^2} + {\left( {z + 1} \right)^2} = 8$.                       

D ${\left( {x - 1} \right)^2} + {y^2} + {\left( {z + 1} \right)^2} = 2$.

A 7

B 1

C 3

D -1

A   $\tan \alpha  = 2$.               

B $\tan \alpha  = \sqrt 2$. 

C $\tan \alpha  = 1$.          

D $\tan \alpha  = \dfrac{1}{2}$.

A   -3.

B   3. 

C 0.  

D -3i.

A   $S = \left[ {0;3} \right]$.     

B $S = \left[ {0;2} \right) \cup \left( {3;7} \right]$.           

C $S = \left[ {0;1} \right) \cup \left( {2;3} \right]$.           

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

A   ${90^0}$.                             

B ${30^0}$                               

C ${45^0}$.                              

D ${60^0}$.

A   2017.                                     

B 2019.                                      

C 2018.                                      

D 2016.

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

B $\left( { - 2;3} \right)$.    

C $\left( {3; - 2} \right)$.    

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

A   $\dfrac{7}{8}$.                    

B $\dfrac{8}{7}$.                     

C 5.  

D $\dfrac{2}{7}$.

A   $\dfrac{{ - 2a + b - 1}}{{a + b}}$.                                

B $\dfrac{{2a + b + 1}}{{a + b}}$.                                    

C $\dfrac{{2a + b - 1}}{{a + b}}$.                                     

D $\dfrac{{2a - b - 1}}{{a + b}}$.

A   $\sqrt 5 a$.                          

B $\dfrac{3}{4}a$.                   

C $\dfrac{{\sqrt {39} a}}{{13}}$                                        

D $\dfrac{1}{{13}}a$.

A   $\dfrac{{{a^3}\sqrt 3 }}{{12}}$.                                   

B $\dfrac{{{a^3}\sqrt 3 }}{3}$.

C  $\dfrac{{{a^3}\sqrt 3 }}{{18}}$.                                   

D $\dfrac{{{a^3}\sqrt 3 }}{{16}}$.

A 6

B 5

C 4

D 3

A   $I = 13$.                              

B $I = 12$.                                

C $I = 20$.                                

D $I = 7$.

A   $a < 0,b > 0,c < 0,d < 0$.

B $a < 0,b < 0,c < 0,d > 0$.     

C   $a > 0,b > 0,c < 0,d < 0$.

D $a < 0,b > 0,c > 0,d < 0$.

A 1

B 3

C 2

D 4

A 5

B 1

C 6

D -1

A 3

B 1

C 2

D 4

A $\dfrac{{x - 1}}{1} = \dfrac{{y - 2}}{{ - 1}} = \dfrac{{z - 3}}{1}$.                        

B $\dfrac{{x - 1}}{1} = \dfrac{{y - 2}}{{ - 3}} = \dfrac{{z - 3}}{{ - 3}}$.                   

C $\dfrac{{x - 1}}{{ - 1}} = \dfrac{{y - 2}}{{ - 3}} = \dfrac{{z - 3}}{{ - 5}}$.             

D $\dfrac{{x - 1}}{2} = \dfrac{{y - 2}}{{ - 1}} = \dfrac{{z - 3}}{4}$.

A   $\dfrac{9}{2}\pi$.               

B $\dfrac{{119}}{6}\pi$

C   $\dfrac{7}{6}\pi$.               

D $\dfrac{{21}}{2}\pi$.

A 5

B 2

C 3

D 6

A   Hàm số $g\left( x \right)$ đồng biến trong khoảng $\left( {3;4} \right)$.              

B Hàm số $g\left( x \right)$ đồng biến trong khoảng $\left( {0;1} \right)$.                           

C   Hàm số $g\left( x \right)$ nghịch biến trong khoảng $\left( {4;6} \right)$.           

D Hàm số $g\left( x \right)$ nghịch biến trong khoảng $\left( {2; + \infty } \right)$

A   $\dfrac{a}{3}$.                    

B $\dfrac{a}{4}$.                     

C $\dfrac{{4a}}{3}$.                

D $\dfrac{{3a}}{4}$.

A   $32\pi$.                               

B $36\pi$.                                

C $38\pi$.                                

D $16\pi$.

A 9

B 8

C 10

D 11

A   $\dfrac{{23}}{{58}}$.          

B $- \dfrac{{43}}{{58}}$.        

C $\dfrac{{65}}{{29}}$.           

D $- \dfrac{{21}}{{58}}$.

A   $\dfrac{{\sqrt 3 }}{8}$.       

B $\dfrac{{3\sqrt 3 }}{8}$. 

C $\dfrac{{\sqrt 2 }}{4}$.   

D $\dfrac{{\sqrt 5 }}{4}$.

A   $\dfrac{3}{2} - \dfrac{1}{{{e^2}}}$.                            

B $\dfrac{3}{4} - \dfrac{1}{{4{e^2}}}$.                            

C $\dfrac{1}{4} - \dfrac{1}{{4{e^2}}}$.                            

D $- \dfrac{1}{2} - \dfrac{1}{{{e^2}}}$.