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Given below are some functions of x and ...

Given below are some functions of x and t to represent the displacement(transverse of longitudinal ) of an elastic wave. State which of these represent(i) a travelling wave,(ii) a stationary wave or (iii) none at all
y=3 sin(5x-0.5t)+4cos(5x-0.5t)`

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It represents progressive /travelling harmonic wave as the arguments of cosine and sine functions are same.
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