A.\(y' = \dfrac{x}{{\ln 3}}\)
B.\(y' = \dfrac{1}{{x\ln 3}}\)
C.\(y' = \dfrac{1}{x}\)
D.\(y' = \dfrac{{\ln 3}}{x}\)

A.\(V = 12\pi \)
B.\(V = 16\pi \)
C.\(V = 8\pi \)
D.\(V = 4\pi \)

A.\({30^0}\)
B.\({60^0}\)
C.\({90^0}\)
D.\({45^0}\)

A.\(27\)
B.\(8\)
C.\(9\)
D.\(6\)

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

A.\(\left( { - \infty ;0} \right)\)
B.\(\left( { - 2;2} \right)\)
C.\(\left( { - 1;3} \right)\)
D.\(\left( { - \infty ; - 2} \right)\)

A.\(1\)
B.\( - 1\)
C.\( - 2\)
D.\(2\)

A.\(C_6^3\)
B.\(2\)
C.\(3!\)
D.\(A_6^3\)

A.\(x = 4\)
B.\(x = \dfrac{5}{2}\)
C.\(x = \dfrac{7}{2}\)
D.\(x = 2\)

A.\(\dfrac{8}{3}\)
B.\(\dfrac{4}{3}\)
C.\(\dfrac{3}{4}\)
D.\(\dfrac{{64}}{3}\)