Question

Identify the function which represents a periodic motion

• A. $e^{\omega t}$
• B. $lo{g}_e\left(\omega t\right)$
• C. $sin\omega t+cos\omega t$
• D. $e^{-\omega t}$

Answer 1

Answer: (C)

is a combination of SHM of same w and same axis so its resultant is also a SHM which is periodic