DLMF:6.7.E10 (Q2263)

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DLMF:6.7.E10
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    Defining formula
    Ein ⁡ ( z ) - Cin ⁡ ( z ) = ∫ 0 π / 2 e - z ⁢ cos ⁡ t ⁢ sin ⁡ ( z ⁢ sin ⁡ t ) ⁢ d t , complementary-exponential-integral 𝑧 cosine-integral-Cin 𝑧 superscript subscript 0 𝜋 2 superscript 𝑒 𝑧 𝑡 𝑧 𝑡 𝑡 {\displaystyle{\displaystyle\mathrm{Ein}\left(z\right)-\mathrm{Cin}\left(z% \right)=\int_{0}^{\pi/2}e^{-z\cos t}\sin\left(z\sin t\right)\mathrm{d}t,}}
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    DLMF id
    DLMF:6.7.E10
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