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I am new to PF so I apologise if a similar thread already exists.

I am reading d'Inverno Introducing Einstein's Relativity. On page 226 describes tidal forces on freely falling particle in Schwarzschild metric, I tried to deduce step by step but I can't get final three equations !?

Starting from relativistic equations of deviation how can I get differential equations of spatial motion ?!

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# D'Inverno page 226 (tidal force on freely falling particle )

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