Question

The period of ${\sin h}\left( \frac{x}{2} \right)$ is

• A. $2\pi i$
• B. $2\pi$
• C. $4\pi i$
• D. $4\pi$

Answer 1

Answer: (C)

$4\pi i$

Answer 2

Since period of $\sinh x$ is $2\pi i$, therefore period of $\sinh\left( \frac{x}{2} \right)$ will be $4\pi i$