Question

Which one of the following does not represent a travelling wave

• A. $y = \sin(x - vt)$
• B. $y = y_{m}\sin k(x + vt)$
• C. $y = y_{m}\log(x - vt)$
• D. $y = f(x^{2} - vt^{2})$

Answer 1

Answer: (D)

$y = f(x^{2} - vt^{2})$

Answer 2

$y = f(x^{2} - vt^{2})$ doesn’t follows the standard wave

equation.