- #1

saltydog

Science Advisor

Homework Helper

- 1,582

- 3

## Main Question or Discussion Point

I've been trying to determine how certain definite integrals are expressed in terms of Gamma functions.

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?

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?

Last edited: