Write down the interval for the principal-value branch of each of the following functions and draw its graph:
Question:
Write down the interval for the principal-value branch of each of the following functions and draw its graph:
$\operatorname{cosec}^{-1} x$
Solution:
Principal value branch of $\operatorname{cosec}^{-1} \times$ is $\left[-\frac{\pi}{2}, 0\right) \cup\left(0, \frac{\pi}{2}\right]$
