Equation Icon  2 2 2 NA (x;m = 0) = N (x), NB (x;m = 0,Δ ξ) = 60Δ ξ N (x), D (x;m2 = 0) = D (x), D (x;m2 = 0,Δ ξ) = 60Δ ξ2D (x), (115 ) A B