# Analytical integral

1. Dec 1, 2014

### matt_crouch

can someone suggest a method to solve an integral of the form analytically?
$\int \left[\frac{1}{(1+x^{2})}\right]^{-n}e^{-x^{2}}dx$

2. Dec 1, 2014

### mathman

Is the bracket a floor function? Otherwise you can use the reciprocal to get (1+x2)n. In that case the infinite integral can be done, but the indefinite integral can be expressed only in terms of the erf.