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We define a function $$ f(k)= G_{3,3}^{3,2}\left(1\left| \begin{array}{c} -1,\frac{2}{k}-2,\frac{1}{k}-1 \\ 0,\frac{1}{k}-2,\frac{2}{k}-2 \\ \end{array} \right.\right) $$ where $G(\cdot)$ denote Meijer G-Function.

I noticed that for $k=2,3,4,6$, $f(k)$ has a simple form $$ f(2)= \frac{1}{4} \left(4+\pi ^2\right), \quad f(3)= \frac{2 \pi \left(2 \pi \sqrt{3}+3\right)}{9 \sqrt{3}}, \quad f(4)=\frac{1}{4} \pi (2+3 \pi ), \quad f(6)=\frac{\pi \left(5 \pi \sqrt{3}+4\right)}{3 \sqrt{3}} $$ But I could not figure out what $f(5)$ should be.

Does $f(5)$ also has a simple form?

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  • $\begingroup$ Mathematica/Wolfram Dev Platform has that function. Have you tried the Simplify function on it? $\endgroup$ – Adrian Keister Apr 26 at 18:55
  • $\begingroup$ Could you give me the Mahematica input form of $f(k)$. I am going to university today and they have the CAS. I could try. $\endgroup$ – Claude Leibovici Apr 27 at 4:50
  • $\begingroup$ Thanks, but l have already tried Mathematica. Now I believe there probably isn't a simpler formula for f(5) $\endgroup$ – ablmf Apr 27 at 6:35

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