The domain of the function $\cos^{-1}(2x - 1)$ is
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → $[0, 1]$ ##
We have, $f(x) = \cos^{-1}(2x - 1)$
$∵ -1 \le 2x - 1 \le 1 \Rightarrow 0 \le 2x \le 2$
$\Rightarrow 0 \le x \le 1$
$∴x \in [0, 1]$