Which of the following equations represents a | vedclass

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(A) travelling wave is represented by a function of the form $y = f(x \pm vt)$.For a wave to be a travelling wave,the variables $x$ and $t$ must appea

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$y = A \sin (15 x - 2 t)$

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(A) travelling wave is represented by a function of the form $y = f(x \pm vt)$.For a wave to be a travelling wave,the variables $x$ and $t$ must appear in the combination $(x \pm vt)$ within the function.In option $A$,$y = A \sin (15 x - 2 t)$,which can be rewritten as $y = A \sin [15(x - \frac{2}{15}t)]$. This matches the form $f(x - vt)$ where $v = \frac{2}{15}$.Options $B$,$C$,and $D$ do not represent a travelling wave because they do not satisfy the condition of being a function of $(x \pm vt)$.

Which of the following equations represents a travelling wave?

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