DLMF:10.61.E12 (Q3807)

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Language	Label	Description	Also known as
English	DLMF:10.61.E12	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle\operatorname{kei}_{\frac{1}{2}}\left(x\sqrt{2}% \right)=-\operatorname{ker}_{-\frac{1}{2}}\left(x\sqrt{2}\right)=-2^{-\frac{3}% {4}}\sqrt{\frac{\pi}{x}}e^{-x}\cos\left(x-\frac{\pi}{8}\right).}}

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DLMF:10.61.E12

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Kelvin function

Defining formula

{\displaystyle{\displaystyle\operatorname{kei}_{\NVar{\nu}}\left(\NVar{x}% \right)}}

C10.S61.E2.m3agdec

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