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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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Dhawal Beohar
Dhawal Beohar 2022-3-17
评论： Dhawal Beohar 2022-3-19
how E2 is defined?
Expression is =

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Torsten
Torsten 2022-3-17
编辑：Torsten 2022-3-17
Why do you ask the same question again ?
It has been answered here:
https://de.mathworks.com/matlabcentral/answers/1665879-how-can-i-write-e2-in-matlab-is-it-expint?s_tid=srchtitle
But you can also call it directly from MATLAB using
s = expint(x,2)
https://de.mathworks.com/help/symbolic/expint.html
And the definition of E_n is here under the point "Generalization":
https://en.wikipedia.org/wiki/Exponential_integral
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Torsten
Torsten 2022-3-19
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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