Q. Which one is not periodic?
A) $\left| \sin{3x} \right| + \sin^{2}x$
B) $\cos{\sqrt{x} + \cos^{2}x}$
C) $\cos{4x + \tan^{2}x}$
D) $\cos^{2}{x + \sin x}$
Explanation
(b)
It is clear from the given options that $\cos\sqrt{x} + \cos^{2}x$ is not periodic.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.