A.2
B.\(\dfrac{1}{2}\)  
C.3
D.\(\dfrac{1}{3}\)

A.3
B.1
C.2
D.4

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

A.\( - 101376\)
B.25344.  
C.101376.  
D.\( - 25344\)

A.\(2.\)
B.\(4.\)  
C.\(3.\)  
D.\(1.\)

A.\(\dfrac{{x - 1}}{1} = \dfrac{y}{1} = \dfrac{{z - 1}}{{ - 1}}\)
B.\(\dfrac{{x + 1}}{{ - 1}} = \dfrac{{y + 1}}{{ - 1}} = \dfrac{{z - 2}}{1}\)
C.\(\dfrac{{x - 1}}{1} = \dfrac{{y - 2}}{1} = \dfrac{{z - 3}}{{ - 1}}\) \(\)
D.\(\dfrac{{x - 1}}{1} = \dfrac{y}{{ - 1}} = \dfrac{{z - 1}}{1}\)

A.\(1 + \pi \)
B.\( - 1 + \pi \)  
C.\(1 + \dfrac{\pi }{2}\)  
D.\( - 1 + \dfrac{\pi }{2}\)

A.\(4 + \sqrt 3 \)
B.\(2 + \sqrt 3 \)  
C.\(4 - \sqrt 3 \)  
D.3

A.
B.
C.
D.

A.\(\dfrac{{3\sin x - \sin 3x}}{{12}} + C\)
B.\(\dfrac{{3\cos x - \cos 3x}}{{12}} + C\)
C.\({\sin ^3}x + C\)
D.\(\sin x{\cos ^2}x + C\)