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DLMF:36.12#Ex5 - MaRDI portal

DLMF:36.12#Ex5 (Q10698)

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DLMF:36.12#Ex5
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    Statements

    f ± ′′ = 2 u 2 f ( u ± ( y ) , y ) , superscript subscript 𝑓 plus-or-minus ′′ partial-derivative 𝑢 2 𝑓 subscript 𝑢 plus-or-minus 𝑦 𝑦 {\displaystyle{\displaystyle f_{\pm}^{\prime\prime}=\frac{{\partial}^{2}}{{% \partial u}^{2}}f(u_{\pm}(y),y),}}
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