04.31: Two very long current-carrying wires a
b khhlb/nc/g qq9(n ,6h:,1euxjtv,vre shown end on in the figure below. The
(6,h/,h j/g1qnuh e q,t cvkbnv 9bx:lwire 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.