KelvinKei

KelvinKei[z] gives the Kelvin function kei(z).

KelvinKei[n, z] gives the Kelvin function kein(z).

Examples

Evaluate the Kelvin kei function:

KelvinKei[2.0]
(* 0.11903 *)

Plot the function:

Plot[KelvinKei[x], {x, 0, 10}]

Please visit the official Wolfram Language Reference for more details.