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Integral from negative infinity to infinity

jacks

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

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