DLMF:20.5.E13 (Q6780)

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Language	Label	Description	Also known as
English	DLMF:20.5.E13	No description defined

Statements

{\displaystyle{\displaystyle\frac{\theta_{4}'\left(z,q\right)}{\theta_{4}\left% (z,q\right)}=4\sin\left(2z\right)\sum_{n=1}^{\infty}\frac{q^{2n-1}}{1-2q^{2n-1% }\cos\left(2z\right)+q^{4n-2}}=4\sum_{n=1}^{\infty}\frac{q^{n}}{1-q^{2n}}\sin% \left(2nz\right).}}

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DLMF:20.5.E13

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