A.\(f\left( 1 \right) =  - e\)
B.\(f\left( 1 \right) =  - \dfrac{2}{e}\)
C.\(f\left( 1 \right) = \dfrac{1}{e}\)
D.\(f\left( 1 \right) = \dfrac{2}{e}\)

A.Đường tròn tâm \(I\left( {0;1} \right)\), bán kính \(R = \sqrt 2 \).
B.Đường tròn tâm \(I\left( {1;0} \right)\), bán kính \(R = \sqrt 2 \).
C.Đường tròn tâm \(I\left( { - 1;0} \right)\), bán kính \(R = \sqrt 2 \).
D.Đường tròn tâm \(I\left( {0; - 1} \right)\), bán kính \(R = \sqrt 2 \).

A.\(\dfrac{1}{{1287}}\)
B.\(\dfrac{4}{{6435}}\)
C.\(\dfrac{4}{{6453}}\)
D.\(\dfrac{1}{{1278}}\)

A.\(9\)
B.\(13\)
C.\(15\)
D.\(11\)

A.\(\sqrt 3 \)
B.\(2\)
C.\(2\sqrt 3 \)
D.\(3\sqrt 3 \)

A.\({30^0}\)
B.\({45^0}\)
C.\({90^0}\)
D.\({60^{}}^0\)

A.\(7\)
B.\(13\)
C.\(5\)
D.\(6\)

A.\(\left\{ 0 \right\}\)
B.\(\left\{ 4 \right\}\)
C.\(\left\{ {0;4} \right\}\)
D.\(\left\{ {0; - 4} \right\}\)

A.\(\dfrac{1}{5}\)
B.\(\dfrac{6}{{11}}\)
C.\(\dfrac{{11}}{{435}}\)
D.\(\dfrac{2}{{29}}\)

A.\(S = \left( { - \infty ;13} \right]\)
B.\(S = \left[ {13; + \infty } \right)\)
C.\(S = \left( { - \infty ;13} \right)\)
D.\(S = \left( {13; + \infty } \right)\)