Let $\mathbf{p} =
$ and $\mathbf{d} =$ and consider the particle that visits $(x,y,z)$ at time $t$ if
Then if $R = (-1, 3, 5)$, calculate the point $(a,b,c)$ on the line that is closest to $R$. Enter $a, b, c$ in that order below.
(a,b,c) = (5/7, -2/7, 3/7).
