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FilledSmallSquare ExpIntegralEi[z] gives the exponential integral function .

FilledSmallSquare Mathematical function (see Section A.3.10).

FilledSmallSquare , where the principal value of the integral is taken.

FilledSmallSquare ExpIntegralEi[z] has a branch cut discontinuity in the complex z plane running from to .

FilledSmallSquare See Section 3.2.10.

FilledSmallSquare See also: ExpIntegralE, Erf, LogIntegral, SinIntegral, CosIntegral.

FilledSmallSquare New in Version 1.

Further Examples