ⅆnⅆ⁡zn⁡(ⅇ-12⁢z⁢zμ-12⁢Wκ,μ⁡(z))=(-1)n⁢ⅇ-12⁢z⁢zμ-12⁢(n+1)⁢Wκ+12⁢n,μ-12⁢n⁡(z),