The exponential integral (expint) of x is defined as E1, then how E2 is defined ? Can it be solved using MATLAB?

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how E2 is defined?
Expression is =

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Torsten
Torsten el 17 de Mzo. de 2022
Editada: Torsten el 17 de Mzo. de 2022
Why do you ask the same question again ?
It has been answered here:
But you can also call it directly from MATLAB using
s = expint(x,2)
And the definition of E_n is here under the point "Generalization":
  10 comentarios
Torsten
Torsten el 19 de Mzo. de 2022
I think that's idiotic.
People who work with expint want it to have numerical output with numerical input, I guess.

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