convert Ei1 to Ei - MaplePrimes

Question:convert Ei1 to Ei

Posted: digerdiga 385 Product: Maple 2018

June 19 2018

Is it possible to convert E1(x) to Ei(x) explicitly?

In particular I have this expression which is real, but imaginary numbers appear due to the definition of Ei1 for negative arguments.

(-exp(j*z)*Ei(1, j*z)+I*Pi*exp(-j*z)+exp(-j*z)*Ei(1, -j*z))/(2*j)

j>0,z>0

Thank you

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