# Not sure what square brackets indicate when dealing with partial derivates

by Kushwoho44
Tags: brackets, dealing, derivates, partial, square
 Math Emeritus Sci Advisor Thanks PF Gold P: 39,327 They are just using "[ ]" in place of "( )" because they are already using "( )" for the "$\vec{r}(t)$" and don't want to have "))". There is no difference in meaning.