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

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

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

A.vùng khởi động.
B.vùng mã hóa.
C.vùng vận hành.
D.vùng kết thúc.

A.(1) → (2)→ (3) → (4).
B.(3) → (1) → (2) → (4).
C.(1) → (3) → (4) → (2).
D.(3) → (2) → (1) → (4).

A.\(0\)
B.\(6\)
C.\(2\)
D.\(\dfrac{{10}}{3}\)

A.\(\dfrac{{x - 4}}{{ - 3}} = \dfrac{{y + 3}}{2} = \dfrac{{z - 2}}{1}\) 
B.\(\left\{ \begin{array}{l}x = 1 - 3t\\y =  - 1 + 2t\\z = 3 + t\end{array} \right.\)
C.\(\dfrac{{x - 1}}{{ - 2}} = \dfrac{{y + 1}}{1} = \dfrac{{z - 3}}{4}\) 
D.\(\dfrac{{x + 2}}{1} = \dfrac{{y - 1}}{{ - 1}} = \dfrac{{z - 4}}{3}\)

A.\(y' = \dfrac{1}{{x\ln 5}}\)
B.\(y' = \dfrac{x}{5}\)
C.\(y' = \dfrac{x}{{\ln 5}}\)
D.\(y' = \dfrac{1}{{5x}}\)

A.\(\dfrac{5}{2}\)
B.\(2\)
C.\(\dfrac{3}{2}\)
D.\(3\)

A.\(4\pi \,\,c{m^2}\)
B.\(6\pi \,\,c{m^2}\)
C.\(2\pi \,\,c{m^2}\)
D.\(8\pi \,\,c{m^2}\)