Question

The period of the function $f\left(x\right)=x\cos x$ is

• A. $\frac{\pi }{2}$
• B. $\pi$
• C. $2\pi$
• D. Not periodic.

Answer 1

The correct option is D Not periodic.

We know that, $\cos x$ is periodic, but $x$ is non periodic.
So, the product of the functions will be non periodic.