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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/06.34.06.0006.01









  


  










Input Form





ExpIntegralE[n, z] == ((-z)^(n - 1)/(n - 1)!) (PolyGamma[n] - Log[z]) - Sum[((-1)^k z^k)/((k - n + 1) k!), {k, 0, n - 2}] - ((-z)^n/n!) HypergeometricPFQ[{1, 1}, {2, n + 1}, -z] /; 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





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