DLMF:29.8.E1 (Q8704)

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DLMF:29.8.E1
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    x = k 2 sn ( z , k ) sn ( z 1 , k ) sn ( z 2 , k ) sn ( z 3 , k ) - k 2 k 2 cn ( z , k ) cn ( z 1 , k ) cn ( z 2 , k ) cn ( z 3 , k ) + 1 k 2 dn ( z , k ) dn ( z 1 , k ) dn ( z 2 , k ) dn ( z 3 , k ) , 𝑥 superscript 𝑘 2 Jacobi-elliptic-sn 𝑧 𝑘 Jacobi-elliptic-sn subscript 𝑧 1 𝑘 Jacobi-elliptic-sn subscript 𝑧 2 𝑘 Jacobi-elliptic-sn subscript 𝑧 3 𝑘 superscript 𝑘 2 superscript superscript 𝑘 2 Jacobi-elliptic-cn 𝑧 𝑘 Jacobi-elliptic-cn subscript 𝑧 1 𝑘 Jacobi-elliptic-cn subscript 𝑧 2 𝑘 Jacobi-elliptic-cn subscript 𝑧 3 𝑘 1 superscript superscript 𝑘 2 Jacobi-elliptic-dn 𝑧 𝑘 Jacobi-elliptic-dn subscript 𝑧 1 𝑘 Jacobi-elliptic-dn subscript 𝑧 2 𝑘 Jacobi-elliptic-dn subscript 𝑧 3 𝑘 {\displaystyle{\displaystyle x=k^{2}\operatorname{sn}\left(z,k\right)% \operatorname{sn}\left(z_{1},k\right)\operatorname{sn}\left(z_{2},k\right)% \operatorname{sn}\left(z_{3},k\right)-\frac{k^{2}}{{k^{\prime}}^{2}}% \operatorname{cn}\left(z,k\right)\operatorname{cn}\left(z_{1},k\right)% \operatorname{cn}\left(z_{2},k\right)\operatorname{cn}\left(z_{3},k\right)+% \frac{1}{{k^{\prime}}^{2}}\operatorname{dn}\left(z,k\right)\operatorname{dn}% \left(z_{1},k\right)\operatorname{dn}\left(z_{2},k\right)\operatorname{dn}% \left(z_{3},k\right),}}
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    DLMF:29.8.E1
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    cn ( z , k ) Jacobi-elliptic-cn 𝑧 𝑘 {\displaystyle{\displaystyle\operatorname{cn}\left(\NVar{z},\NVar{k}\right)}}
    C22.S2.E5.m2adec
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