I've been trying to determine how certain definite integrals are expressed in terms of Gamma functions.(adsbygoogle = window.adsbygoogle || []).push({});

Mathematica returns the following:

[tex]\int_0^1 \frac{dx}{\sqrt{1-x^4}}=\frac{\sqrt{\pi}\Gamma[\frac{5}{4}]}{\Gamma[\frac{3}{4}]}[/tex]

(Mapple returns a different but equivalent expression in terms of Gamma)

In general it seems:

[tex]\int_0^1 \frac{dx}{\sqrt{1-x^n}}=\frac{\sqrt{\pi}\Gamma[\frac{n+1}{n}]}{\Gamma[\frac{n+2}{2n}]}[/tex]

Can anyone explain to me how this is determined or provide a hint or a reference?

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# Definite integral and Gamma functions

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