Category:Characterization of Exponential Integral Function
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This category contains pages concerning Characterization of Exponential Integral Function:
Formulation $1$
Let $\Ei: \R_{>0} \to \R$ denote the exponential integral function:
- $\map \Ei x = \ds \int_{t \mathop = x}^{t \mathop \to +\infty} \frac {e^{-t} } t \rd t$
Then:
- $\ds \map \Ei x = -\gamma - \ln x + \int_0^x \frac {1 - e^{-u} } u \rd u$
Formulation $2$
Characterization of Exponential Integral Function/Formulation 2
Pages in category "Characterization of Exponential Integral Function"
The following 2 pages are in this category, out of 2 total.