Jul 26, 2012 Thread starter #1 J jacks Well-known member Apr 5, 2012 226 $\displaystyle (1)\;\; \int_{-\infty}^{\infty}\frac{x^2}{1+4x+3x^2-4x^3-2x^4+2x^5+x^6}dx$

Jul 27, 2012 #2 C CaptainBlack Well-known member Jan 26, 2012 890 \[\int_{-\infty}^{\infty}\frac{x^2}{1+4x+3x^2-4x^3-2x^4+2x^5+x^6}dx=\pi\] Now can you tell us in what context this arises. CB

\[\int_{-\infty}^{\infty}\frac{x^2}{1+4x+3x^2-4x^3-2x^4+2x^5+x^6}dx=\pi\] Now can you tell us in what context this arises. CB