ExpIntegralEi

ExpIntegralEi[z]
gives the exponential integral function .

DetailsDetails

  • Mathematical function, suitable for both symbolic and numerical manipulation.
  • , where the principal value of the integral is taken.
  • ExpIntegralEi[z] has a branch cut discontinuity in the complex z plane running from to .
  • For certain special arguments, ExpIntegralEi automatically evaluates to exact values.
  • ExpIntegralEi can be evaluated to arbitrary numerical precision.
  • ExpIntegralEi automatically threads over lists.
Introduced in 1988
(1.0)