A.\(2\sqrt 2 \pi {a^3}\)
B.\(12\pi {a^3}\)
C.\(36\pi {a^3}\)
D.\(\dfrac{{2\sqrt 2 \pi }}{3}{a^3}\)

A.\({x^2} - \cos x + \dfrac{1}{5}\sin 5x - 1\)
B.\({x^2} + \cos x - \dfrac{1}{5}\sin 5x + 2\)
C.\({x^2} + \cos x - \dfrac{1}{5}\sin 5x - 2\)
D.\({x^2} - \cos x + \dfrac{1}{5}\sin 5x + 1\)

A.\(4\)
B.\(3\)
C.\(2\)
D.\(\dfrac{5}{2}\)

A.\({x^4} + 5x + C\)
B.\(12x + C\)
C.\(\dfrac{{{x^4}}}{4} + 5x + C\)
D.\({x^4} + 2\)

A.\(y = {\left( {\dfrac{2}{\pi }} \right)^x}\)
B.\(y = 0,{5^{ - x}}\)
C.\(y = {x^3}\)
D.\(y = {\log _{\dfrac{1}{3}}}x\)

A.\(15\)
B.\(10\)
C.\(20\)
D.\(5\)

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

A.\(\dfrac{2}{{189}}\)
B.\(\dfrac{{21}}{{200}}\)
C.\(\dfrac{{20}}{{189}}\)
D.\(\dfrac{1}{2}\)

A.Unless
B.Whether
C.Provided that
D.Even if

A.unless
B.whether
C.if
D.as long as