Boat A's position is given by x(t) = 3-t, y(t) = 2t — 4,
and boat B's position is given by x(t) = 4-3t,
y(t) = 32t. The distance units are kilometres, and the
time units are hours. At what time are the boats closest to each other?
We-re supposed to use derivatives combined with vector equations but I-m not exactly ure how to do it. Please help!