Question: Suppose that instead of the form (3.2.2), we use the form which has no imaginary part, and therefore corresponds to a real wave in the

Suppose that instead of the form (3.2.2), we use the form u=uo cosq.- wat), which has no imaginary part, and therefore corresponds to a real wave in the medium. Show that this implies that the scattered wave will be shifted in frequency either up or down by the frequency ω(vector)_q, that is, energy can be either absorbed from or emitted into the sound waves.

u=uo cosq.- wat),

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