Which of the following functions of time represent (a) simple harmonic, (b) periodic but not simple harmonic , and (c) non-periodic motion ? Give period for each case of periodic motion `, omega` is any positive constant). ltbr. (a) `sinomegat-cosomegat)` (b) `sin^(3)omegat` (c) `3cos((pi)/(4)-2omegat)`
(d) `cosomegat+cos3omegat+cos5omegat)` (e) ` exp(-omega^(2)t^(2))` (f) `1+omegat+omega^(2)t^(2)`