WhittakerM
WhittakerM[k,m,z] gives the Whittaker function .
Examples
Evaluate the Whittaker M function:
WhittakerM[1, 0.5, 2.0]
(* 2.71828 *)Plot the function:
Plot[WhittakerM[0.5, 0.25, x], {x, 0, 5}]Please visit the official Wolfram Language Reference for more details.