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DLMF:36.13#Ex3 - MaRDI portal

DLMF:36.13#Ex3 (Q10707)

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DLMF:36.13#Ex3
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    u ( ϕ ) = Δ 1 / 2 ( ϕ ) 2 ( 1 f + ′′ ( ϕ ) + 1 - f - ′′ ( ϕ ) ) , 𝑢 italic-ϕ superscript Δ 1 2 italic-ϕ 2 1 superscript subscript 𝑓 ′′ italic-ϕ 1 superscript subscript 𝑓 ′′ italic-ϕ {\displaystyle{\displaystyle u(\phi)=\sqrt{\dfrac{\Delta^{1/2}(\phi)}{2}}\left% (\dfrac{1}{\sqrt{f_{+}^{\prime\prime}(\phi)}}+\dfrac{1}{\sqrt{-f_{-}^{\prime% \prime}(\phi)}}\right),}}
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