DLMF:8.19.E15 (Q2701)

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DLMF:8.19.E15
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    j E p ( z ) p j = ( - 1 ) j 1 ( ln t ) j t - p e - z t d t , partial-derivative exponential-integral-En 𝑝 𝑧 𝑝 𝑗 superscript 1 𝑗 superscript subscript 1 superscript 𝑡 𝑗 superscript 𝑡 𝑝 superscript 𝑒 𝑧 𝑡 𝑡 {\displaystyle{\displaystyle\frac{{\partial}^{j}E_{p}\left(z\right)}{{\partial p% }^{j}}=(-1)^{j}\int_{1}^{\infty}(\ln t)^{j}t^{-p}e^{-zt}\mathrm{d}t,}}
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    DLMF:8.19.E15
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    z > 0 𝑧 0 {\displaystyle{\displaystyle\Re z>0}}
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    d x 𝑥 {\displaystyle{\displaystyle\mathrm{d}\NVar{x}}}
    C1.S4.SS4.m1acdec
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