Question: Verify that w(r, t) = Aexplik . F Fit + ic) is a solution to the 3D differential wave equation (by plugging it into the

Verify that w(r, t) = Aexplik . F Fit + ic) is a solution to the 3D differential wave equation (by plugging it into the wave equation.) What is the speed of the wave? What is the direction of propagation? Is this a harmonic wave? If so, what are the frequency, wavelength and period? (Hint, you may only use k , @, A and & in your answer because only these appear in the question, as well as any mathematical factors. You may also use k = k .)

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