04.31: Two very long current-carrying
6m 5uxczwqy*.9otq *yy ;ort5 wires are shown end on in the figure below.
6y5;m*q 9w*cqxozr.5yyut ot The wire on
the left has a 4A current going into of the plane of the paper and the wire on the right has a 3A
current coming out of the paper. Disregarding the case of x → ±∞, in which region(s) could the
magnetic field from these two wires add to zero on the x-axis.