Difference between revisions of "Logarithmic integral"
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$$\mathrm{li}(x)=\mathrm{Ei}( \log(x)).$$ | $$\mathrm{li}(x)=\mathrm{Ei}( \log(x)).$$ | ||
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Revision as of 16:05, 9 October 2014
The logarithmic integral is $$\mathrm{li}(x) = \displaystyle\int_0^x \dfrac{dt}{\log(t)},$$ where $\log$ denotes the logarithm. The logarithmic integral is related to the exponential integral by the formula $$\mathrm{li}(x)=\mathrm{Ei}( \log(x)).$$
