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ExpIntegralEi

Usage

• ExpIntegralEi[z] gives the exponential integral function .


Notes

• Mathematical function (see Section A.3.10).
• , where the principal value of the integral is taken.
• ExpIntegralEi[z] has a branch cut discontinuity in the complex z plane running from to .
• See Section 3.2.11.
• See also: ExpIntegralE, Erf, LogIntegral, SinIntegral, CosIntegral.
• New in Version 1.
Further Examples


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