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In books, it is always posted that velocity (dx[itex]^{i}[/itex]/dt) is not a 4 vector. While du[itex]^{i}[/itex]/ds and momentum are 4 vectors.. But it is never proved.
How to prove this?? I am not finding anyway to it.
You're my last hope!
How to prove this?? I am not finding anyway to it.
You're my last hope!