Vibrations and Waves · Problem 2-4

The free vibrations of physical systems — A.P. French

Physics — Waves · frequency-of-combined-motion

Problem

Find the frequency of the combined motion of each of the following: ((a))

\sin(2\pi t - \sqrt{2}) + \cos(2\pi t)

. ((b))

\sin(12\pi t) + \cos(13\pi t - \pi/4)

. ((c))

\sin(3t) - \cos(\pi t)