deletions | additions       diff --git a/Now_substituting_the_constants_of__.tex b/Now_substituting_the_constants_of__.tex  index 9eb59b8..74e8d04 100644  --- a/Now_substituting_the_constants_of__.tex  +++ b/Now_substituting_the_constants_of__.tex 
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Now, substituting the constants of motion:  $$  \ddot{r} \left(1-\frac{2M}{r}\right)  = - \frac{M}{r^2}\left(1-\frac{2M}{r}\right)^{-1}  \epsilon^2 + \frac{M}{r^2}\left(1-\frac{2M}{r}\right)^{-1}  \dot{r}^2 + \frac{\lambda^2}{r} \left(1-\frac{2M}{r}\right) \left(1-\frac{2M}{r}\right)^2  $$