Consider the following three frequency responses for causal and stable third-order LTI s...

Consider the following three frequency responses for causal and stable third-order LTI systems. By utilizing the properties of first- and second-order systems discussed in Section 6.6, determine whether or not the impulse response of each of the third-order systems is oscillatory. (Note: You should be able to answer this clues-don without taking the inverse Fourier transforms of the frequency responses of the third-order systems.)