What is the frequency of #f(theta)= sin 4 t - cos 24 t #?
The separate frequencies for the two terms are
#F_2 = 24/(2pi) = 12/pi.
The frequency F of
#1/F = L/F_1 = M/F_2, for befitting integers L and M, givnig
Note that 2 is a factor of 12.
Easily, the lowest choice is L = 1, M = 6 and