DLMF:5.4.E19 (Q2057)

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Language	Label	Description	Also known as
English	DLMF:5.4.E19	No description defined

Statements

{\displaystyle{\displaystyle\psi\left(\frac{p}{q}\right)=-\gamma-\ln q-\frac{% \pi}{2}\cot\left(\frac{\pi p}{q}\right)+\frac{1}{2}\sum_{k=1}^{q-1}\cos\left(% \frac{2\pi kp}{q}\right)\ln\left(2-2\cos\left(\frac{2\pi k}{q}\right)\right).}}

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DLMF:5.4.E19

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