what is "li_2(y)"?



> From: li jing
>
> Dear all
> 
> When I integrate a function, maxima returns with a long expression. It 
> contains a strange part "li_2(y)" where 2 is a down index. What is such 
> function? Can one give me some clue?

li[2](y) is the polylogarithm function of order 2 and argument x.
Specifically li[2] is the dilogarithm function.  RTFM for details.


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