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The equation y = a (sin kx cos wt- cos k...

The equation y = a `(sin kx cos wt- cos kx sin omega t)` represent.

A

a progressive wave propagating along the positive x-axis with velocity `omega/k`

B

a progressive wave propagating along the negative x-axis with velocity `omega/k`

C

a stationary wave

D

not a wave motion.

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