SEARCH Articles Figures Tables Exponential integral equation Exponential integral function Exponential integral table Exponentially Fitted Symplectic Integrators Exponentially correlated integral First exponential integral General Exponential integral Methods using a series expansion as an approximation for the exponential integral Methods using a simple approximation for the exponential integral Methods using tabulated values of the exponential integral The Exponential and Trigonometric Integrals The exponential integral