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ExpIntegralE




Mathematica Notation

Traditional Notation









Gamma, Beta, Erf > ExpIntegralE[nu,z] > Series representations > Generalized power series > Expansions at z==0 > For the function itself > Special cases





http://functions.wolfram.com/06.34.06.0005.01









  


  








Input Form





ExpIntegralE[n, z] == ((-z)^(n - 1)/(n - 1)!) (PolyGamma[n] - Log[z]) - Sum[If[k == n - 1, 0, ((-1)^k z^k)/((k - n + 1) k!)], {k, 0, Infinity}] /; Element[n, Integers] && n > 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)





2001-10-29