A) \[Cos\,kx\,Sin\,\omega t\]
B) \[Cos\,(kx\,+\omega t)\]
C) \[{{k}^{2}}{{x}^{2}}-{{\omega }^{2}}{{t}^{2}}\]
D) \[Cos\,({{k}^{2}}{{x}^{2}}-{{\omega }^{2}}{{t}^{2}})\]
Correct Answer: A
Solution :
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