A.\(F\left( x \right) =  - \dfrac{1}{2}\cos 2x + C\)
B.\(F\left( x \right) = \cos 2x + C\)
C.\(F\left( x \right) = \dfrac{1}{2}\cos 2x + C\)
D.\(F\left( x \right) =  - \cos 2x + C\)

A.\(A = \smallint dt\)
B.\(A = \smallint \dfrac{1}{{{t^2}}}dt\)
C.\(A = \smallint tdt\)
D.\(A = \smallint \dfrac{1}{t}dt\)

A.\(0\)
B.\(2\)
C.\(\dfrac{1}{2}\)
D.\(1\)

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

A.\(\bar z =  - 2 - 3i\)
B.\(\bar z =  - 2 + 3i\)
C.\(\bar z = 2 + 3i\)
D.\(\bar z = 2 - 3i\)

A.\(\left( {1 + 2i} \right) + \left( { - 1 + 2i} \right)\)
B.\(\left( {3 + 2i} \right) + \left( {3 - 2i} \right)\)
C.\(\left( {5 + 2i} \right) - \left( {\sqrt 5  - 2i} \right)\)
D.\(\left( {\sqrt 3  - 2i} \right) - \left( {\sqrt 3  + 2i} \right)\)

A.\(z = 2 - i\)
B.\(z =  - 2 + i\)
C.\(z =  - 1 + 2i\)
D.\(z = 1 - 2i\)

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

A.\(V = \dfrac{{{a^3}\sqrt 2 }}{6}\)
B.\(V = \dfrac{{2{a^3}\sqrt 2 }}{3}\)
C.\(V = 2{a^3}\sqrt 2 \)
D.\(V = \dfrac{{{a^3}\sqrt 2 }}{3}\)

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