A.\(F\left( t \right) =  - \tan t + C\)
B.\(F\left( t \right) =  - \cot t + C\)
C.\(F\left( t \right) = \tan t + C\)
D.\(F\left( t \right) = \cot t + C\)

A.\(\tan x + C\)
B.\(\cot x + C\)
C.\(\arctan x + C\)
D.\({\mathop{\rm arccot}\nolimits} x + C\)

A.\(J = \int {\tan tdt} \)
B.\(J = \int {\tan 2tdt} \)
C.\(J = \dfrac{1}{2}\int {\tan 2tdt} \)
D.\(J = \dfrac{1}{2}\int {{{\tan }^2}} tdt\)

A.\(I = \int {2\left( {1 + \cos 2t} \right)dt} \)
B.\(I = \int {2\left( {1 + \cos 3t} \right)dt} \)
C.\(I = \int {2\left( {4 + \cos 2t} \right)dt} \)
D.\(I = \int {2\left( {1 + 2\cos 2t} \right)dt} \)

A.
B.
C.
D.

A.
B.
C.
D.

A.
B.
C.
D.

A.0,112 lít.
B.0,114 lít.
C.0,224 lít.
D.0,136 lít.

A.48%.
B.90%.
C.84%.
D.61%.

A.NaHCO3.
B.Na2SO4.
C.NH4HCO3.
D.NaHSO4.