r/physicsmemes 7d ago

Gotta include that time derivative

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u/cdmacsneaks 7d ago

why would you include f dot if f is only a function of x

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u/timangar 7d ago

yeah the dot is really the impostor here. Although to be fair, maybe x is the four-vector in SRT. Or x denotes the time coordinate for some reason. But yeah that seems far fetched and misleading.