Why the Griffiths book says : any function of x and t that depends on these variables in the special combination (x±vt) represent a wave of fixed profile, traveling in the -+x direction at speed v...(adsbygoogle = window.adsbygoogle || []).push({});

I don't really get the reason why from 2 terms of wavefunction can become only one term?

Please help.

Thanks

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# Free particle wavefunction represent a fixed profile= wavepacket?

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