DLMF:12.17.E4
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Math Formula Information
Formula: Failed to parse (unknown function "\pderiv"): {\displaystyle \frac{1}{\xi^{2}+\eta^{2}}\left(\pderiv[2]{w}{\xi}+\pderiv[2]{w}{\eta}\right)+\pderiv[2]{w}{\zeta}+k^{2}w=0.}
Name: DLMF:12.17.E4
Description:
Data Source
https://lct.wmflabs.org/w/index.php?title=Special:EntityPage/Q4287