DLMF:22.13.E14 (Q7065)

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Language	Label	Description	Also known as
English	DLMF:22.13.E14	No description defined

Statements

{\displaystyle{\displaystyle\frac{{\mathrm{d}}^{2}}{{\mathrm{d}z}^{2}}% \operatorname{cn}\left(z,k\right)=-({k^{\prime}}^{2}-k^{2})\operatorname{cn}% \left(z,k\right)-2k^{2}{\operatorname{cn}^{3}}\left(z,k\right),}}

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