[" 14.4.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 I "omega" is any positive constant) "],[[" (i) "sin omega t-cos omega t," (ii) "cos omega t+cos3 omega t+cos5 omega t],[" (v) "exp(-omega^(2)t^(2))," (vi) "1+omega t+omega^(2)t^(2)]]