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CosIntegral
CosIntegral[z] gives the cosine integral function .
Mathematical function (see Section A.3.10).
 .
CosIntegral[z] has a branch cut discontinuity in the complex z plane running from to .
See The Mathematica Book: Section 3.2.10.
See also: SinIntegral, ExpIntegralE, ExpIntegralEi, FresnelC.
Further Examples
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