What is the General Fitting equation for $2$ magnetic field? This is what is given for the general fitting equation of $1$ magnetic field A$*($B$^2)/(($z$-$C$)^2+$B$^2)^(3/2).$ Please view image to see what each variable represents, variables A$,$ B$,$ and C are meant to be altering on tn the software to get a line that closely fits the data that is collected.