Question Number 215186 by MrGaster last updated on 31/Dec/24
$$\int_{\mathrm{0}} ^{\infty} {Ei}\left(−{x}\right)\mathrm{ln}{xdx} \\ $$
Answered by MathematicalUser2357 last updated on 31/Dec/24
$$=\mathrm{1}+\boldsymbol{\gamma}\:\left(\approx\mathrm{1}.\mathrm{57722}\right) \\ $$