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

A.\(12\)
B.\(4\)
C.\(8\)
D.\(2\)

A.\(12\)
B.\(4\)
C.\(8\)
D.\(2\)

A.\(\dfrac{1}{{2a}}\sin 2a\)
B.\(\dfrac{1}{a}\sin a\)
C.\(\dfrac{1}{{3a}}\sin 2a\)
D.\(\dfrac{1}{2}\sin 2a\)

A.\( - \infty \)
B.\(1\)
C.\( + \infty \)
D.\(0\)

A.\( - \sin b\)
B.\(\sin b\)
C.\( - \cos b\)
D.\(\cos b\)

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

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

A.\({U_0} = 150V\)
B.\({U_0} = 125V\)
C.\({U_0} = 100\sqrt 3 V\)
D.\({U_0} = 115V\)

A.\(1,06{\rm{r}}a{\rm{d}}.\)
B.\(1,58{\rm{r}}a{\rm{d}}.\)
C.\(2,1{\rm{r}}a{\rm{d}}.\)
D.\(0,79{\rm{r}}a{\rm{d}}.\)