gaokao 2017 Q5

gaokao · China · national-I-science 5 marks Curve Sketching Range and Image Set Determination

The range of the function $f(x) = \sqrt{x^2 - 2x - 3}$ is
A. $[-2, 2]$
B. $[-1, 1]$
C. $[0, 4]$
D. $[1, 3]$

The range of the function $f(x) = \sqrt{x^2 - 2x - 3}$ is

A. $[-2, 2]$

B. $[-1, 1]$

C. $[0, 4]$

D. $[1, 3]$