A.Li.
B.Cs.
C.Be.
D.Na.

A.\(x - \ln \left( {x + 1} \right) + C\)
B.\(x + \ln \left| {x + 1} \right| + C\)
C.\(x + \ln \left( {x + 1} \right) + C\)
D.\(x - \ln \left| {x + 1} \right| + C\)

A.Cửa Soi Rạp.
B.Cửa Bát Xắc
C.Cửa Cung Hầu.
D.Cửa Định An.

A.\(\left( {21;28} \right)\)
B.\(\left( {15;21} \right)\)
C.\(\left( { - 10;1} \right)\)
D.\(\left( {1;9} \right)\)

A.\(2010 < m < 2015\)
B.\(m < 2010\)
C.\(m > 2025\)
D.\(2015 < m < 2025\)

A.\(\dfrac{{a\sqrt 7 }}{7}\)
B.\(\dfrac{{a\sqrt 3 }}{4}\)
C.\(\dfrac{{a\sqrt {15} }}{5}\)
D.\(\dfrac{a}{2}\)

A.\(P = \dfrac{{27}}{{406}}\)
B.\(P = \dfrac{{33}}{{406}}\)  
C.\(P = \dfrac{{57}}{{406}}\)
D.\(P = \dfrac{{23}}{{406}}\)

A.3
B.4
C.1
D.2

A.\(S = \left( {2 + 2\sqrt 2 } \right)\pi {a^2}\)
B.\(S = \left( {4 + 2\sqrt 2 } \right)\pi {a^2}\)
C.\(S = \left( {2 + 4\sqrt 2 } \right)\pi {a^2}\)
D.\(S = \left( {4 + 4\sqrt 2 } \right)\pi {a^2}\)

A.\(T = 0\)
B.\(T = 10\)
C.\(T = 6\)
D.\(T =  - 3\)