DLMF:8.21.E9 (Q2730)

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Language	Label	Description	Also known as
English	DLMF:8.21.E9	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle\mathrm{Ci}\left(a,z\right)=\Gamma\left(a\right)% \cos\left(\tfrac{1}{2}\pi a\right)-\mathrm{ci}\left(a,z\right),}}

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DLMF:8.21.E9

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{\displaystyle{\displaystyle a\neq 0,-2,-4,\dots}}

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Defining formula

{\displaystyle{\displaystyle\Gamma\left(\NVar{z}\right)}}

C5.S2.E1.m2abdec

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the ratio of the circumference of a circle to its diameter

Defining formula

{\displaystyle{\displaystyle\pi}}

C3.S12.E1.m2addec

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cosine function

Defining formula

{\displaystyle{\displaystyle\cos\NVar{z}}}

C4.S14.E2.m2abdec

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generalized cosine integral

Defining formula

{\displaystyle{\displaystyle\mathrm{Ci}\left(\NVar{a},\NVar{z}\right)}}

C8.S21.E2.m2abdec

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generalized cosine integral

Defining formula

{\displaystyle{\displaystyle\mathrm{ci}\left(\NVar{a},\NVar{z}\right)}}

C8.S21.E1.m2abdec

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Defining formula

{\displaystyle{\displaystyle z}}

C8.S1.XMD2.m1gdec

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Sitelinks

Wikipedia(0 entries)

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