changes.mady.by.user Arthur Aslanyan (Nafta College)
Saved on Mar 23, 2019
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{\rm Ei}(0) = -\infty
{\rm Ei}(-\infty) = 0
\lim_{|z| \rightarrow \pm \infty } {\rm Ei}(z+\infty) = 0+\infty
\frac{d }{dx}{\rm Ei}(x) = \frac{e^x}{x}
