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ExpIntegralEi




Mathematica Notation

Traditional Notation









Gamma, Beta, Erf > ExpIntegralEi[z] > Continued fraction representations





http://functions.wolfram.com/06.35.10.0001.01









  


  








Input Form





ExpIntegralEi[z] == I Pi Sign[Im[z]] - E^z (1/(1 - z - (3 - z - 4/(5 - z - 9/(7 - z - 16/(9 - z - 25/(11 - z - 36/(13 - z + \[Ellipsis]))))))^(-1))) /; Abs[Arg[-z]] < Pi








Standard Form





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MathML Form







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Rule Form





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Date Added to functions.wolfram.com (modification date)





2001-10-29