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The complexity of using exponential integrals function in sum of series

Posted 2 months ago
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I need to clarify why the output gives not an appropriate result ? Actually the code is working without giving error and gives and output. But it stacks with adding exponential function in the sum of series.

I am happy to hear any ways to solve this type of calculation with using exponential integrals in the sum of series form.

Thanks.

Do you have any reason to think there is a closed form for the double sum with ExpIntegralE function?

Most Sum don't have one.

Maybe the best you can do is numerical methods with approximation.

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