\[V_{m}(\xi)\sim\frac{1}{2^{4}h}\bigg(-D_{m+2}\left(\xi\right)-m(m-1)D_{m-2}%
\left(\xi\right)\bigg)+\frac{1}{2^{10}h^{2}}\left(D_{m+6}\left(\xi\right)+(m^{%
2}-25m-36)D_{m+2}\left(\xi\right)-m(m-1)(m^{2}+27m-10)D_{m-2}\left(\xi\right)-%
6!\genfrac{(}{)}{0.0pt}{}{m}{6}D_{m-6}\left(\xi\right)\right)+\cdots,\]