Problem with finite sum. Negative upper limit

Question:Problem with finite sum. Negative upper limit

Posted: Mariusz Iwaniuk 1511 Product: Maple 2016

February 20 2017

Hi Dears,

I'm have a code like this:

sum(-GAMMA(k+1, x), k = 0 .. -2) and Maple give me : Ei(1, x).

How to check that answer is correct?

Thank you in advance.

I am looking forward to hearing from you.

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