\[\dfrac{\operatorname{se}_{m+1}\left(x,h^{2}\right)}{\operatorname{se}_{m+1}'%
\left(0,h^{2}\right)}=\dfrac{2^{m-(\ifrac{1}{2})}}{\tau_{m+1}}\left(W_{m}^{+}(%
x)(P_{m}(x)-Q_{m}(x))-W_{m}^{-}(x)(P_{m}(x)+Q_{m}(x))\right),\]