Cho hàm số  \(f\left( x \right) = \left\{ \begin{a...

Câu hỏi: Cho hàm số  \(f\left( x \right) = \left\{ \begin{array}{l}x + 2\sqrt {1 - x} \,\,\,\,\,khi\,\,\,x \le 1\\\frac{{x + 3}}{{x + 1}}\,\,\,\,khi\,\,\,1 < x \le 5\end{array} \right..\)  

A \(\begin{array}{l}D = \left( { - \infty ;\,\,5} \right]\\f\left( { - 3} \right) = 1\,\,\,;\,\,\,f\left( 1 \right) = 1\\f\left( 2 \right) = \frac{5}{3}\,\,\,;\,\,\,f\left( 5 \right) = \frac{4}{3}\end{array}\)

B \(\begin{array}{l}D = \left( { - \infty ;\,\,1} \right]\\f\left( { - 3} \right) = 0\,\,\,;\,\,\,f\left( 1 \right) = 2\\f\left( 2 \right) = \frac{5}{3}\,\,\,;\,\,\,f\left( 5 \right) = \frac{4}{3}\end{array}\)

C \(\begin{array}{l}D = \left( {1;5} \right]\\f\left( { - 3} \right) = 0\,\,\,;\,\,\,f\left( 1 \right) = 2\\f\left( 2 \right) = 3\,\,\,;\,\,\,f\left( 5 \right) = \frac{3}{2}\end{array}\)

D \(\begin{array}{l}D = \left( {5; + \infty } \right)\\f\left( { - 3} \right) = 1\,\,\,;\,\,\,f\left( 1 \right) = 1\\f\left( 2 \right) = 2\,\,\,;\,\,\,f\left( 5 \right) = \frac{3}{2}\end{array}\)

A \(M,N\)

B \(M,P\)

C \(N,P\)

D \(M,N,P\)