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ExpIntegralEi






Mathematica Notation

Traditional Notation









Gamma, Beta, Erf > ExpIntegralEi[z] > Series representations > Generalized power series > Expansions at generic point z==z0 > For the function itself





http://functions.wolfram.com/06.35.06.0011.01









  


  










Input Form





ExpIntegralEi[z] \[Proportional] ExpIntegralEi[Subscript[z, 0]] - I Pi Floor[(Pi + Arg[z])/(2 Pi)] + (1/2) (Log[1/Subscript[z, 0]] - Log[Subscript[z, 0]]) + Log[Subscript[z, 0]] + Floor[Arg[z - Subscript[z, 0]]/(2 Pi)] (Log[1/Subscript[z, 0]] + Log[Subscript[z, 0]]) + (E^Subscript[z, 0]/Subscript[z, 0]) (z - Subscript[z, 0]) + ((E^Subscript[z, 0] (Subscript[z, 0] - 1))/(2 Subscript[z, 0]^2)) (z - Subscript[z, 0])^2 + \[Ellipsis] /; (z -> Subscript[z, 0])










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)





2007-05-02





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