SolAug2706

Sketch: Using the reflection formula for the gamma function

\Gamma(x) \Gamma(1-x) = \frac{\pi}{\sin(\pi x)}

we can rewrite the integral as

\frac12 \int_0^1 \log \left(\frac{\pi}{\sin(\pi x)}\right) \, dx

which evaluates to log(2π) / 2