how are you all
can you help me in finding the anti derivative of the function
There's no closed-form solution for that integral, unfortunately.
Although no elementary functions can be found, a closed expression is
so that you can approximate the values of the function.
P.S: It is not infortunate (for me) that there is no primitive, since the Ei function is an essential ingredient of the theory and has led to marvellous new insights.
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