\displaystyle {\left| x \right|^{\frac{{n + 2}}{2}}}{\Delta _x}w(x) = {\left( {\frac{{{\lambda ^2}}}{{|x|}}} \right)^{\frac{{n + 2}}{2}}}{\left( {\frac{{|x|}}{\lambda }} \right)^{n - 2}}{\Delta _x}w(x) = {\left| y \right|^{\frac{{n + 2}}{2}}}{\Delta _y}W(y)