A.Bảy tuổi trở xuống.
B.Sáu tuổi trở xuống.
C.Bốn tuổi trở xuống.
D.

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

A.\(x =  - 3\)
B.\(x = 1\)
C.\(x = 2\)
D.\(x =  - 2\)

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

A.\(\dfrac{{15}}{3}\)
B.\(\dfrac{{17}}{4}\)
C.\(\dfrac{7}{4}\)
D.\(\dfrac{{15}}{4}\)

A.\(3\)
B.\(7\)
C.\( - 10\)
D.\( - 7\)

A.\(\smallint f\left( x \right)dx = \dfrac{1}{2}\sin 2x + C\)
B.\(\smallint f\left( x \right)dx =  - \dfrac{1}{2}\sin 2x + C\)
C.\(\smallint f\left( x \right)dx = 2\sin 2x + C\)
D.\(\smallint f\left( x \right)dx =  - 2\sin 2x + C\)

A.\(\smallint f\left( x \right)dx = 3{x^3} - x + C\) 
B.\(\smallint f\left( x \right)dx = {x^3} - x + C\)
C.\(\smallint f\left( x \right)dx = \dfrac{1}{3}{x^3} - x + C\)
D.\(\smallint f\left( x \right)dx = {x^3} - C\)

A.\(x = 3\)
B.\(x = 2\)
C.\(x = \dfrac{8}{3}\)
D.\(x = \dfrac{1}{2}\)

A.\(x = 3\)
B.\(x = 2\)
C.\(x = 1\)
D.\(x =  - 1\)