A.\(\left( { - 2;0} \right)\)
B.\(\left( { - \infty ; - 2} \right)\)
C.\(\left( {0;2} \right)\)
D.\(\left( {0; + \infty } \right)\)

A.\(V = \pi \int\limits_a^b {{f^2}\left( x \right)dx} \)  
B.\(V = 2\pi \int\limits_a^b {{f^2}\left( x \right)dx} \)  
C.\(V = {\pi ^2}\int\limits_a^b {{f^2}\left( x \right)dx} \)  
D.\(V = {\pi ^2}\int\limits_a^b {f\left( x \right)dx} \)

A.\(x = 1\)
B.\(x = 0\)
C.\(x = 5\)
D.\(x = 2\)

A.\(\log (3a) = 3\log a\)  
B.\(\log {a^3} = \dfrac{1}{3}\log a\)
C.\(\log {a^3} = 3\log a\)
D.\(\log (3a) = \dfrac{1}{3}\log a\)

A.\({x^3} + C\)  
B.\(\dfrac{{{x^3}}}{3} + x + C\)  
C.\(6x + C\)  
D.\({x^3} + x + C\)

A.\(M\left( {3;0;0} \right)\)  
B.\(N\left( {0; - 1;1} \right)\)  
C.\(P\left( {0; - 1;0} \right)\)  
D.\(Q\left( {0;0;1} \right)\)

A.\(y =  - {x^4} + 2{x^2} + 2\)
B.\(y = {x^4} - 2{x^2} + 2\)
C.\(y = {x^3} - 3{x^2} + 2\)
D.\(y =  - {x^3} + 3{x^2} + 2\)

A.\(\overrightarrow {{u_1}}  = \left( { - 1;2;1} \right)\)  
B.\(\overrightarrow {{u_2}}  = \left( {2;1;0} \right)\)  
C.\(\overrightarrow {{u_3}}  = \left( {2;1;1} \right)\)  
D.\(\overrightarrow {{u_4}}  = \left( { - 1;2;0} \right)\)

A.\(\left( {0;6} \right)\)  
B.\(\left( { - \infty ;6} \right)\)  
C.\(\left( {0;64} \right)\)  
D.\(\left( {6; + \infty } \right)\)

A.\(2\sqrt 2 a\)  
B.\(3a\)
C.\(2a\)  
D.\(\dfrac{{3a}}{2}\)