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1 vote
0 answers
98 views

Using Contour Integral to find the value of $\int_{-1}^{+1}\frac{\ln{(1+t)}}{t}dt$

$\newcommand{LogI}{\operatorname{Li}}$ We know that the value of $\LogI_{2}(-1)$ is -$\frac{\pi^2}{12}$ and $\LogI_{2}(1)$ is $\frac{\pi^2}{6}$. The value of the polylogarithms has already been ...
Sourangshu Ghosh's user avatar
5 votes
3 answers
320 views

Is there a closed-form for $\sum_{n=0}^{\infty}\frac{n}{n^3+1}$?

I'm reading a book on complex variables (The Theory of Functions of a Complex Variable, Thorn 1953) and the following is shown: Let $f(z)$ be holomorphic and single valued in $\mathbb{C}$ except at a ...
Integrand's user avatar
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